what is the {point in time} for {Queen} has {award received} as {Rock and Roll Hall of Fame} ?
When was the induction of Queen into the Rock and Roll Hall of Fame?
When did Queen get inducted into the Rock and Roll Hall of Fame?
SELECT ?k WHERE { resource:Queen property:award_received ?r . ?r property:award_received resource:Rock_and_Roll_Hall_of_Fame . ?r property:point_in_time ?k }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q15862> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P166> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q179191> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q15862 p:P166 ?s . ?s ps:P166 wd:Q179191 . ?s pq:P585 ?value}