What is {twinned administrative body} of {Fuzhou} that is {start time} is {1981-5-20} ?
Did Fuzhou become a twinned administrative body on May 20th, 1981?
When is {twinned administrative body} of {Fuzhou} where {start time} is {1981-5-20} ?
SELECT ?o WHERE { FILTER ( CONTAINS ( YEAR ( ?c ) , '1981' ) ) . ?t property:twinned_administrative_body ?o . ?t property:start_time ?c . resource:Fuzhou property:twinned_administrative_body ?t }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q68481> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P190> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <1981-5-20>
} 

SELECT ?obj WHERE { wd:Q68481 p:P190 ?s . ?s ps:P190 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1981')) }