fix childrens boolean lapse

Author: wbglaeser

datafields/family.ttl

@@ -44,12 +44,10 @@ ff:children a ff:DataField ;
         sh:targetSubjectsOf ff:children ;
         sh:property [
             sh:path ff:children ;
-            sh:in (ff:children-no ff:children-yes) ;
+            sh:datatype xsd:boolean ;
             sh:maxCount 1 ;
         ] ;
     ] .
-ff:children-no a ff:AnswerOption ; rdfs:label "Nein"@de , "No"@en .
-ff:children-yes a ff:AnswerOption ; rdfs:label "Ja"@de , "Yes"@en .
 
 ff:childrenAge a ff:DataField ;
     schema:category ff:familienstand-df-kategorie;