what is the {start time} for {Havana} has {twinned administrative body} as {Cusco} ?
When was Havana's partner city Cusco?
When did Havana have a twinned administrative body of Cusco?
SELECT ?a WHERE { ?l property:start_time ?a . ?l property:twinned_administrative_body resource:Cuzco . resource:Havana property:twinned_administrative_body ?l }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1563> .
?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/Q5582862> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q1563 p:P190 ?s . ?s ps:P190 wd:Q5582862 . ?s pq:P580 ?value}