Did {Magna_Carta} {language of work or name} {Latin}?
Is it true that Magna Carta was written in Latin?
Was the Magna Carta written in Latin?
ASK WHERE { resource:Magna_Carta property:language_of_work_or_name resource:Latin }
 ASK { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q12519> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P407> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q397>. } 
ASK WHERE { wd:Q12519 wdt:P407 wd:Q397 }