what is the {date of birth} for {Frederick William I of Prussia} has {child} as {Wilhelmine of Prussia, Margravine of Brandenburg-Bayreuth} ?
In what moment does Frederick William I of Prussia's children Wilhelmine of Prussia and Margravine of Brandenburg-Bayreuth were born?
When were Frederick William I of Prussia's children Wilhelmine of Prussia and Margravine of Brandenburg-Bayreuth born?
SELECT ?c WHERE { ?d property:date_of_birth ?c . ?d property:child resource:Wilhelmine_of_Prussia,_Margravine_of_Brandenburg-Bayreuth . resource:Frederick_William_I_of_Prussia property:child ?d }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q105013> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P40> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q237740> .
?statement <http://www.wikidata.org/entity/P569> ?value. 
} 

SELECT ?value WHERE { wd:Q105013 p:P40 ?s . ?s ps:P40 wd:Q237740 . ?s pq:P569 ?value}