Eintrag Sokrates unklar

xml/indices/people.xml

@@ -3937,14 +3937,14 @@
                     <idno type="VIAF">88039167</idno>
                     <idno type="ISNI">0000000121426535</idno>
                     <persName>
-                        <surname>Sokrates</surname>
+                        <surname>Sokrates</surname> <!-- So umsetzbar? -->
                     </persName>
                     <birth>
-                        <date cert="unknown" when-iso="469"/>
+                        <date cert="unknown" when-iso="469" calendar="BC"/> <!-- So umsetzbar? -->
                         <placeName ref="#l0269">Athen</placeName>
                     </birth>
                     <death>
-                        <date cert="unknown" when-iso="399"/>
+                        <date cert="unknown" when-iso="399" calendar="BC"/> <!-- So umsetzbar? -->
                         <placeName ref="#l0269">Athen</placeName>
                     </death>
                     <sex value="1"/>