what is the {start time} for {Democratic Republic of the Congo} has {flag image} as {Flag of Zaire.svg} ?
What did the Democratic Republic of Congo begin using the Flag of Zaire desig
When did the Democratic Republic of Congo begin using the Flag of Zaire design?
SELECT ?w WHERE { FILTER ( CONTAINS ( ?d , 'Flag of Zaire.svg' ) ) . ?d property:start_time ?w . resource:Democratic_Republic_of_the_Congo property:flag_image ?d . ?d property:flag_image ?d }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q974> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P41> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <Flag of Zaire.svg> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q974 p:P41 ?s . ?s ps:P41 ?x filter(contains(?x , 'Flag of Zaire.svg')) . ?s pq:P580 ?value}