what is the {valid in period} for {Le Havre} has {located in time zone} as {UTC+01:00} ?
Le Havre was in the time zone UTC+01:00 at what time?
When was Le Havre in the time zone UTC+01:00?
SELECT ?p WHERE { ?v property:valid_in_period ?p . ?v property:located_in_time_zone resource:UTC+01:00 . resource:Le_Havre property:located_in_time_zone ?v }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q42810> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P421> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q6655> .
?statement <http://www.wikidata.org/entity/P1264> ?value. 
} 

SELECT ?value WHERE { wd:Q42810 p:P421 ?s . ?s ps:P421 wd:Q6655 . ?s pq:P1264 ?value}