what is the {start time} for {Tianjin} has {twinned administrative body} as {Hakodate} ?
On what date did Tianjin begin to have a twinned administrative body with Hakodate?
When did Tianjin begin to have a twinned administrative body with Hakodate?
SELECT ?a WHERE { ?h property:start_time ?a . resource:Tianjin property:twinned_administrative_body ?h . ?h property:twinned_administrative_body resource:Hakodate }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q11736> .
?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> <http://wikidata.dbpedia.org/resource/Q26418> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q11736 p:P190 ?s . ?s ps:P190 wd:Q26418 . ?s pq:P580 ?value}