What is {child} of {Isabella I of Castile} and {date of birth}
Give me the name of child of Isabella I of Castile and his birth date
Who is the child of Isabella I of Castile and when were they born?
SELECT ?r ?p WHERE { ?o property:child ?p . resource:Isabella_I_of_Castile property:child ?o . ?o property:date_of_birth ?r . }
select distinct ?dataprop1 ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q45859> . ?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> ?obj . ?statement <http://www.wikidata.org/entity/P580> ?dataprop1 . } 
SELECT ?value1 ?obj WHERE { wd:Q45859 p:P40 ?s . ?s ps:P40 ?obj . ?s pq:P569 ?value1 . }