What is {twinned administrative body} of {Liège} that is {start time} is {1955-1-1} ?
In 1955, what was Liege's twin city?
What was Liège's twin city in 1955?
SELECT ?t WHERE { resource:Liège property:twinned_administrative_body ?a . FILTER ( CONTAINS ( YEAR ( ?j ) , '1955' ) ) . ?a property:twinned_administrative_body ?t . ?a property:start_time ?j }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q3992> .
?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> <1955-1-1>
} 

SELECT ?obj WHERE { wd:Q3992 p:P190 ?s . ?s ps:P190 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1955')) }