what is the {start time} for {Bobby Fischer} has {title of chess player} as {Grandmaster} ?
On what date was Bobby Fischer a Grandmaster chess player?
When was Bobby Fischer a Grandmaster chess player?
SELECT ?c WHERE { ?h property:title_of_chess_person resource:Grandmaster . resource:Bobby_Fischer property:title_of_chess_person ?h . ?h property:start_time ?c }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q41314> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2962> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q105269> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q41314 p:P2962 ?s . ?s ps:P2962 wd:Q105269 . ?s pq:P580 ?value}