What is {significant event} of {Air Canada} that is {point in time} is {1976-3-18} ?
On March 18, 1976, which Air Canada event took place?
What event of the Air Canada occurred on March 18, 1976?
SELECT ?i WHERE { ?b property:significant_event ?i . resource:Air_Canada property:significant_event ?b . FILTER ( CONTAINS ( YEAR ( ?s ) , '1976' ) ) . ?b property:point_in_time ?s }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q185339> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P793> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P585> <1976-3-18>
} 

SELECT ?obj WHERE { wd:Q185339 p:P793 ?s . ?s ps:P793 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'1976')) }