Did {David_Attenborough} {given name} {Frederick}?
Is it true that David Attenborough's given name was Frederick?
Was David Attenborough given name Frederick?
ASK WHERE { resource:David_Attenborough property:given_name resource:Frederick }
 ASK { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q183337> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P735> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q3273004>. } 
ASK WHERE { wd:Q183337 wdt:P735 wd:Q3273004 }