What is {child} of {Peter Sellers} and {date of birth}
How ancient is Dwindle Dealers child, and when were they born?
How old is Peter Sellers child, and when were they born?
SELECT ?p ?c WHERE { resource:Peter_Sellers property:child ?v . ?v property:child ?c . ?v property:date_of_birth ?p . }
select distinct ?dataprop1 ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q177984> . ?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:Q177984 p:P40 ?s . ?s ps:P40 ?obj . ?s pq:P569 ?value1 . }