What is {instance of} of {Hiroshima} that is {start time} is {1904-0-0} ?
What happened in Hiroshima in year 1904?
SELECT ?obj WHERE { wd:Q34664 p:P31 ?s . ?s ps:P31 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1904')) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q34664> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P31> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <1904-0-0>
} 

Describe the detail of Hiroshima, 1904?