What is {date of birth} and {mother} of {{Charlemagne} has {child} as {Charles the Younger}}
What is the date of the birth of Charlemagne's son, O Lovem, and who would his mother be?
When did Charlemagne's child Charles the Younger was born and who was his mother?
SELECT ?u ?v WHERE { ?v property:date_of_birth ?u . resource:Charlemagne property:child ?v . ?v property:mother ?v . ?v property:child resource:Charles_the_Younger }
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/Q283107>. ?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:Q283107 . ?s pq:P569 ?value1 . ?s pq:P25 ?value2 }