what is the {start time} for {Nice} has {twinned administrative body} as {Edinburgh} ?
When was Decent had twinned authoritative body of Edinburgh?
When was Nice had twinned administrative body of Edinburgh?
SELECT ?p WHERE { ?r property:twinned_administrative_body resource:Edinburgh . ?r property:start_time ?p . resource:Nice property:twinned_administrative_body ?r }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q33959> .
?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/Q23436> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q33959 p:P190 ?s . ?s ps:P190 wd:Q23436 . ?s pq:P580 ?value}