What is {member of political party} of {Chen Shui-bian} that is {start time} is {1987-2-28} ?
Tell me the political party Chen Shui-bian belonged to in 1987-02-28?
What political party did Chen Shui-bian belong to in 1987-02-28?
SELECT ?p WHERE { ?p property:start_time ?v . FILTER ( CONTAINS ( YEAR ( ?v ) , '1987' ) ) . resource:Chen_Shui-bian property:member_of_political_party ?p . ?p property:member_of_political_party ?p }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q22368> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P102> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <1987-2-28>
} 

SELECT ?obj WHERE { wd:Q22368 p:P102 ?s . ?s ps:P102 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1987')) }