what is the {start time} for {Astrakhan} has {twinned administrative body} as {Brest} ?
At what time did Astrakhan join as a twin town with Brest?
When did Astrakhan become a twinned town with Brest?
SELECT ?p WHERE { resource:Astrakhan property:twinned_administrative_body ?u . ?u property:start_time ?p . ?u property:twinned_administrative_body resource:Brest }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q3927> .
?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/Q140147> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q3927 p:P190 ?s . ?s ps:P190 wd:Q140147 . ?s pq:P580 ?value}