what is the {point in time} for {SQL} has {developer} as {Raymond F. Boyce} ?
At what point was SQL created by developer Raymond F Boyce?
When did developer Raymond F boyce create SQL?
SELECT ?m WHERE { ?q property:point_in_time ?m . resource:Structured_Query_Language property:developer ?q . ?q property:developer resource:Raymond_F._Boyce }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q47607> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P178> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q93007> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q47607 p:P178 ?s . ?s ps:P178 wd:Q93007 . ?s pq:P585 ?value}