What is {mother} and {date of birth} of {{Charlemagne} has {child} as {Hugh, son of Charlemagne}}
When was born Hugh, son of Charlemagne, and who was his mother?
When was Charlemagne's son Hugh born, and who was his mother?
SELECT ?g ?z WHERE { ?g property:child resource:Hugh . ?g property:date_of_birth ?z . resource:Charlemagne property:child ?g . ?g property:mother ?g }
select distinct ?value1 ?value2 where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q3044> . ?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/Q920516>. ?statement <http://www.wikidata.org/entity/P580> ?value1 . ?statement <http://www.wikidata.org/entity/P2842> ?value2 } 
SELECT ?value1 ?value2 WHERE { wd:Q3044 p:P40 ?s . ?s ps:P40 wd:Q920516 . ?s pq:P25 ?value1 . ?s pq:P569 ?value2 }