What is {member of} of {Marshall Islands} that is {start time} is {1992-9-23} ?
Who were the members of marshall islands in 1992-9-23
What member of Marshall Islands started on 1992-9-23?
SELECT ?b WHERE { ?k property:member_of ?b . ?k property:start_time ?g . FILTER ( CONTAINS ( YEAR ( ?g ) , '1992' ) ) . resource:Marshall_Islands property:member_of ?k }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q709> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P463> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <1992-9-23>
} 

SELECT ?obj WHERE { wd:Q709 p:P463 ?s . ?s ps:P463 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1992')) }