What is {significant event} of {Laser Interferometer Gravitational-Wave Observatory} that is {start time} is {1994-0-0} ?
What happened in 1994 at the start of the Observatory?
What is the significant event held in the beginning of Laser Interferometer Gravitational-Wave Observatory in 1994
SELECT ?c WHERE { resource:Laser_Interferometer_Gravitational_Wave_Observatory property:significant_event ?c . ?c property:significant_event ?c . FILTER ( CONTAINS ( YEAR ( ?b ) , '1994' ) ) . ?c property:start_time ?b }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q255371> .
?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/P580> <1994-0-0>
} 

SELECT ?obj WHERE { wd:Q255371 p:P793 ?s . ?s ps:P793 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1994')) }