diff --git a/FCA.ipynb b/FCA.ipynb
index a0b216da55ee9902f5d2fbe3a1daeea4bc6a6e49..89eb873b9b03338fdb4b43a5bd1ce316c96ce827 100644
--- a/FCA.ipynb
+++ b/FCA.ipynb
@@ -16,7 +16,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "id": "legislative-disclaimer",
    "metadata": {},
    "outputs": [],
@@ -34,36 +34,36 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 1,
    "id": "regular-arthur",
    "metadata": {},
    "outputs": [
     {
      "data": {
       "text/plain": [
-       "{'a0_s0': {'#iphigenie'},\n",
-       " 'a0_s1': {'#arkas', '#iphigenie'},\n",
-       " 'a0_s2': {'#iphigenie', '#thoas'},\n",
-       " 'a0_s3': {'#iphigenie'},\n",
-       " 'a1_s0': {'#orest', '#pylades'},\n",
-       " 'a1_s1': {'#iphigenie', '#pylades'},\n",
-       " 'a2_s0': {'#iphigenie', '#orest'},\n",
-       " 'a2_s1': {'#orest'},\n",
-       " 'a2_s2': {'#iphigenie', '#orest', '#pylades'},\n",
-       " 'a3_s0': {'#iphigenie'},\n",
-       " 'a3_s1': {'#arkas', '#iphigenie'},\n",
-       " 'a3_s2': {'#iphigenie'},\n",
-       " 'a3_s3': {'#iphigenie', '#pylades'},\n",
-       " 'a3_s4': {'#iphigenie'},\n",
-       " 'a4_s0': {'#arkas', '#thoas'},\n",
-       " 'a4_s1': {'#thoas'},\n",
-       " 'a4_s2': {'#iphigenie', '#thoas'},\n",
-       " 'a4_s3': {'#iphigenie', '#orest', '#thoas'},\n",
-       " 'a4_s4': {'#arkas', '#orest', '#pylades', '#thoas'},\n",
-       " 'a4_s5': {'#iphigenie', '#orest', '#thoas'}}"
+       "{'0/0': {'#iphigenie'},\n",
+       " '0/1': {'#arkas', '#iphigenie'},\n",
+       " '0/2': {'#iphigenie', '#thoas'},\n",
+       " '0/3': {'#iphigenie'},\n",
+       " '1/0': {'#orest', '#pylades'},\n",
+       " '1/1': {'#iphigenie', '#pylades'},\n",
+       " '2/0': {'#iphigenie', '#orest'},\n",
+       " '2/1': {'#orest'},\n",
+       " '2/2': {'#iphigenie', '#orest', '#pylades'},\n",
+       " '3/0': {'#iphigenie'},\n",
+       " '3/1': {'#arkas', '#iphigenie'},\n",
+       " '3/2': {'#iphigenie'},\n",
+       " '3/3': {'#iphigenie', '#pylades'},\n",
+       " '3/4': {'#iphigenie'},\n",
+       " '4/0': {'#arkas', '#thoas'},\n",
+       " '4/1': {'#thoas'},\n",
+       " '4/2': {'#iphigenie', '#thoas'},\n",
+       " '4/3': {'#iphigenie', '#orest', '#thoas'},\n",
+       " '4/4': {'#arkas', '#orest', '#pylades', '#thoas'},\n",
+       " '4/5': {'#iphigenie', '#orest', '#thoas'}}"
       ]
      },
-     "execution_count": 8,
+     "execution_count": 1,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -95,7 +95,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 9,
+   "execution_count": 2,
    "id": "urban-alloy",
    "metadata": {},
    "outputs": [],
@@ -112,7 +112,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "durable-multimedia",
+   "id": "working-childhood",
    "metadata": {},
    "source": [
     "We use the [concepts](https://github.com/xflr6/concepts) Python library for FCA:"
@@ -120,10 +120,20 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "id": "ranking-island",
+   "execution_count": 3,
+   "id": "robust-potato",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Requirement already satisfied: concepts in /home/rja/.local/lib/python3.9/site-packages (0.9.2)\r\n",
+      "Requirement already satisfied: graphviz~=0.7 in /home/rja/.local/lib/python3.9/site-packages (from concepts) (0.20.1)\r\n",
+      "Requirement already satisfied: bitsets~=0.7 in /home/rja/.local/lib/python3.9/site-packages (from concepts) (0.8.4)\r\n"
+     ]
+    }
+   ],
    "source": [
     "!pip install concepts"
    ]
@@ -138,7 +148,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 10,
+   "execution_count": 4,
    "id": "grave-hungary",
    "metadata": {},
    "outputs": [
@@ -148,7 +158,7 @@
        "17"
       ]
      },
-     "execution_count": 10,
+     "execution_count": 4,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -170,7 +180,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 11,
+   "execution_count": 5,
    "id": "piano-practice",
    "metadata": {},
    "outputs": [
@@ -207,7 +217,7 @@
        "<g id=\"edge1\" class=\"edge\">\n",
        "<title>c1&#45;&gt;c1</title>\n",
        "<path fill=\"none\" stroke=\"transparent\" d=\"M125.49,-105.78C134.53,-110.44 145.3,-108.51 145.3,-100 145.3,-91.49 134.53,-89.56 125.49,-94.22\"/>\n",
-       "<text text-anchor=\"middle\" x=\"119.5\" y=\"-76.76\" font-family=\"Times,serif\" font-size=\"14.00\">a2_s2</text>\n",
+       "<text text-anchor=\"middle\" x=\"119.5\" y=\"-76.76\" font-family=\"Times,serif\" font-size=\"14.00\">2/2</text>\n",
        "</g>\n",
        "<!-- c2 -->\n",
        "<g id=\"node3\" class=\"node\">\n",
@@ -223,7 +233,7 @@
        "<g id=\"edge3\" class=\"edge\">\n",
        "<title>c2&#45;&gt;c2</title>\n",
        "<path fill=\"none\" stroke=\"transparent\" d=\"M206.49,-105.78C215.53,-110.44 226.3,-108.51 226.3,-100 226.3,-91.49 215.53,-89.56 206.49,-94.22\"/>\n",
-       "<text text-anchor=\"middle\" x=\"200.5\" y=\"-76.76\" font-family=\"Times,serif\" font-size=\"14.00\">a4_s4</text>\n",
+       "<text text-anchor=\"middle\" x=\"200.5\" y=\"-76.76\" font-family=\"Times,serif\" font-size=\"14.00\">4/4</text>\n",
        "</g>\n",
        "<!-- c3 -->\n",
        "<g id=\"node4\" class=\"node\">\n",
@@ -239,7 +249,7 @@
        "<g id=\"edge5\" class=\"edge\">\n",
        "<title>c3&#45;&gt;c3</title>\n",
        "<path fill=\"none\" stroke=\"transparent\" d=\"M410.49,-196.78C419.53,-201.44 430.3,-199.51 430.3,-191 430.3,-182.49 419.53,-180.56 410.49,-185.22\"/>\n",
-       "<text text-anchor=\"middle\" x=\"404.5\" y=\"-167.76\" font-family=\"Times,serif\" font-size=\"14.00\">a0_s1 a3_s1</text>\n",
+       "<text text-anchor=\"middle\" x=\"404.5\" y=\"-167.76\" font-family=\"Times,serif\" font-size=\"14.00\">0/1 3/1</text>\n",
        "</g>\n",
        "<!-- c4 -->\n",
        "<g id=\"node5\" class=\"node\">\n",
@@ -255,7 +265,7 @@
        "<g id=\"edge7\" class=\"edge\">\n",
        "<title>c4&#45;&gt;c4</title>\n",
        "<path fill=\"none\" stroke=\"transparent\" d=\"M353.49,-196.78C362.53,-201.44 373.3,-199.51 373.3,-191 373.3,-182.49 362.53,-180.56 353.49,-185.22\"/>\n",
-       "<text text-anchor=\"middle\" x=\"347.5\" y=\"-167.76\" font-family=\"Times,serif\" font-size=\"14.00\">a4_s0</text>\n",
+       "<text text-anchor=\"middle\" x=\"347.5\" y=\"-167.76\" font-family=\"Times,serif\" font-size=\"14.00\">4/0</text>\n",
        "</g>\n",
        "<!-- c5 -->\n",
        "<g id=\"node6\" class=\"node\">\n",
@@ -271,7 +281,7 @@
        "<g id=\"edge9\" class=\"edge\">\n",
        "<title>c5&#45;&gt;c5</title>\n",
        "<path fill=\"none\" stroke=\"transparent\" d=\"M283.49,-105.78C292.53,-110.44 303.3,-108.51 303.3,-100 303.3,-91.49 292.53,-89.56 283.49,-94.22\"/>\n",
-       "<text text-anchor=\"middle\" x=\"277.5\" y=\"-76.76\" font-family=\"Times,serif\" font-size=\"14.00\">a4_s3 a4_s5</text>\n",
+       "<text text-anchor=\"middle\" x=\"277.5\" y=\"-76.76\" font-family=\"Times,serif\" font-size=\"14.00\">4/3 4/5</text>\n",
        "</g>\n",
        "<!-- c6 -->\n",
        "<g id=\"node7\" class=\"node\">\n",
@@ -292,7 +302,7 @@
        "<g id=\"edge11\" class=\"edge\">\n",
        "<title>c6&#45;&gt;c6</title>\n",
        "<path fill=\"none\" stroke=\"transparent\" d=\"M41.49,-196.78C50.53,-201.44 61.3,-199.51 61.3,-191 61.3,-182.49 50.53,-180.56 41.49,-185.22\"/>\n",
-       "<text text-anchor=\"middle\" x=\"35.5\" y=\"-167.76\" font-family=\"Times,serif\" font-size=\"14.00\">a1_s0</text>\n",
+       "<text text-anchor=\"middle\" x=\"35.5\" y=\"-167.76\" font-family=\"Times,serif\" font-size=\"14.00\">1/0</text>\n",
        "</g>\n",
        "<!-- c7 -->\n",
        "<g id=\"node8\" class=\"node\">\n",
@@ -308,7 +318,7 @@
        "<g id=\"edge14\" class=\"edge\">\n",
        "<title>c7&#45;&gt;c7</title>\n",
        "<path fill=\"none\" stroke=\"transparent\" d=\"M106.49,-196.78C115.53,-201.44 126.3,-199.51 126.3,-191 126.3,-182.49 115.53,-180.56 106.49,-185.22\"/>\n",
-       "<text text-anchor=\"middle\" x=\"100.5\" y=\"-167.76\" font-family=\"Times,serif\" font-size=\"14.00\">a1_s1 a3_s3</text>\n",
+       "<text text-anchor=\"middle\" x=\"100.5\" y=\"-167.76\" font-family=\"Times,serif\" font-size=\"14.00\">1/1 3/3</text>\n",
        "</g>\n",
        "<!-- c8 -->\n",
        "<g id=\"node9\" class=\"node\">\n",
@@ -360,7 +370,7 @@
        "<g id=\"edge21\" class=\"edge\">\n",
        "<title>c10&#45;&gt;c10</title>\n",
        "<path fill=\"none\" stroke=\"transparent\" d=\"M299.49,-196.78C308.53,-201.44 319.3,-199.51 319.3,-191 319.3,-182.49 308.53,-180.56 299.49,-185.22\"/>\n",
-       "<text text-anchor=\"middle\" x=\"293.5\" y=\"-167.76\" font-family=\"Times,serif\" font-size=\"14.00\">a0_s2 a4_s2</text>\n",
+       "<text text-anchor=\"middle\" x=\"293.5\" y=\"-167.76\" font-family=\"Times,serif\" font-size=\"14.00\">0/2 4/2</text>\n",
        "</g>\n",
        "<!-- c11 -->\n",
        "<g id=\"node12\" class=\"node\">\n",
@@ -381,7 +391,7 @@
        "<g id=\"edge23\" class=\"edge\">\n",
        "<title>c11&#45;&gt;c11</title>\n",
        "<path fill=\"none\" stroke=\"transparent\" d=\"M230.49,-196.78C239.53,-201.44 250.3,-199.51 250.3,-191 250.3,-182.49 239.53,-180.56 230.49,-185.22\"/>\n",
-       "<text text-anchor=\"middle\" x=\"224.5\" y=\"-167.76\" font-family=\"Times,serif\" font-size=\"14.00\">a2_s0</text>\n",
+       "<text text-anchor=\"middle\" x=\"224.5\" y=\"-167.76\" font-family=\"Times,serif\" font-size=\"14.00\">2/0</text>\n",
        "</g>\n",
        "<!-- c12 -->\n",
        "<g id=\"node13\" class=\"node\">\n",
@@ -428,7 +438,7 @@
        "<g id=\"edge29\" class=\"edge\">\n",
        "<title>c13&#45;&gt;c13</title>\n",
        "<path fill=\"none\" stroke=\"transparent\" d=\"M238.87,-285.22C247.59,-287.11 257.3,-286.04 257.3,-282 257.3,-277.96 247.59,-276.89 238.87,-278.78\"/>\n",
-       "<text text-anchor=\"middle\" x=\"236.19\" y=\"-260.32\" font-family=\"Times,serif\" font-size=\"14.00\">a4_s1</text>\n",
+       "<text text-anchor=\"middle\" x=\"236.19\" y=\"-260.32\" font-family=\"Times,serif\" font-size=\"14.00\">4/1</text>\n",
        "</g>\n",
        "<!-- c13&#45;&gt;c13 -->\n",
        "<g id=\"edge30\" class=\"edge\">\n",
@@ -460,7 +470,7 @@
        "<g id=\"edge34\" class=\"edge\">\n",
        "<title>c14&#45;&gt;c14</title>\n",
        "<path fill=\"none\" stroke=\"transparent\" d=\"M126.87,-285.22C135.59,-287.11 145.3,-286.04 145.3,-282 145.3,-277.96 135.59,-276.89 126.87,-278.78\"/>\n",
-       "<text text-anchor=\"middle\" x=\"124.19\" y=\"-260.32\" font-family=\"Times,serif\" font-size=\"14.00\">a2_s1</text>\n",
+       "<text text-anchor=\"middle\" x=\"124.19\" y=\"-260.32\" font-family=\"Times,serif\" font-size=\"14.00\">2/1</text>\n",
        "</g>\n",
        "<!-- c14&#45;&gt;c14 -->\n",
        "<g id=\"edge35\" class=\"edge\">\n",
@@ -497,7 +507,7 @@
        "<g id=\"edge39\" class=\"edge\">\n",
        "<title>c15&#45;&gt;c15</title>\n",
        "<path fill=\"none\" stroke=\"transparent\" d=\"M310.87,-285.22C319.59,-287.11 329.3,-286.04 329.3,-282 329.3,-277.96 319.59,-276.89 310.87,-278.78\"/>\n",
-       "<text text-anchor=\"middle\" x=\"308.19\" y=\"-260.32\" font-family=\"Times,serif\" font-size=\"14.00\">a0_s0 a0_s3 a3_s0 a3_s2 a3_s4</text>\n",
+       "<text text-anchor=\"middle\" x=\"308.19\" y=\"-260.32\" font-family=\"Times,serif\" font-size=\"14.00\">0/0 0/3 3/0 3/2 3/4</text>\n",
        "</g>\n",
        "<!-- c15&#45;&gt;c15 -->\n",
        "<g id=\"edge40\" class=\"edge\">\n",
@@ -539,10 +549,10 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<graphviz.graphs.Digraph at 0x7f3682f591f0>"
+       "<graphviz.graphs.Digraph at 0x7f05d9dd3d90>"
       ]
      },
-     "execution_count": 11,
+     "execution_count": 5,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -561,7 +571,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 12,
+   "execution_count": 6,
    "id": "organic-cable",
    "metadata": {},
    "outputs": [],
@@ -579,21 +589,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 13,
+   "execution_count": 20,
    "id": "interior-steam",
    "metadata": {},
    "outputs": [
-    {
-     "name": "stderr",
-     "output_type": "stream",
-     "text": [
-      "Widget Javascript not detected.  It may not be installed or enabled properly. Reconnecting the current kernel may help.\n"
-     ]
-    },
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "b55fd6b921fe4355aea902208dc79e29"
+       "model_id": "54eab76066384427b9ce58b6504695e3"
       }
      },
      "metadata": {},
@@ -603,14 +606,28 @@
    "source": [
     "from ipywidgets import interact, Dropdown\n",
     "import dracor\n",
+    "from IPython.core.display import display, HTML\n",
+    "\n",
+    "corpora = {\n",
+    "    \"ger\" : [\n",
+    "        \"goethe-egmont\", \"goethe-iphigenie-auf-tauris\", \"eichendorff-die-freier\",\n",
+    "        \"haffner-die-fledermaus\", \"kleist-amphitryon\", \"nestroy-eulenspiegel\",\n",
+    "        \"schiller-wilhelm-tell\", \"schiller-kabale-und-liebe\", \"schiller-die-raeuber\"\n",
+    "    ],\n",
+    "    \"shake\" : [\n",
+    "        \"a-midsummer-night-s-dream\", \"macbeth\", \"the-merchant-of-venice\", \n",
+    "        \"romeo-and-juliet\", \"othello\", \"much-ado-about-nothing\", \"king-lear\", \n",
+    "        \"julius-caesar\"\n",
+    "    ]\n",
+    "}\n",
     "\n",
-    "corpora = dracor.corpora()\n",
+    "# corpora = dracor.corpora()\n",
     "\n",
-    "corpus_widget = Dropdown(options=corpora, value='shake', description='Corpus:')\n",
-    "play_widget = Dropdown(options=dracor.plays(\"shake\"), value=\"a-midsummer-night-s-dream\", description='Play:')\n",
+    "corpus_widget = Dropdown(options=list(corpora.keys()), value='shake', description='Corpus:')\n",
+    "play_widget = Dropdown(options=corpora[\"shake\"], value=\"a-midsummer-night-s-dream\", description='Play:')\n",
     "\n",
     "def on_update_corpus_widget(*args):\n",
-    "    play_widget.options = dracor.plays(corpus_widget.value)\n",
+    "    play_widget.options = corpora[corpus_widget.value] # dracor.plays(corpus_widget.value)\n",
     "\n",
     "corpus_widget.observe(on_update_corpus_widget, 'value')\n",
     "\n",
@@ -631,9 +648,10 @@
     "    \n",
     "    ctx = concepts.Context(objects, attributes, incidence)\n",
     "    \n",
-    "    print(len(ctx.lattice), \"formal concepts\")\n",
+    "    display(HTML(str(len(ctx.lattice)) + ' formal concepts (<a href=\"https://dracor.org/' + corpus + '/' + play + '\">play on DraCor</a>)'))\n",
     "    ctx.tofile(play + \".cxt\", frmat=\"cxt\")\n",
     "    \n",
+    "    # print(ctx.lattice)\n",
     "    return ctx.lattice.graphviz()"
    ]
   }