what is the {instance of} for {Paul Éluard} has {pseudonym} as {Didier Desroches} ?
When did Paul Éluard use the pseudonym "Didier Desroches"?
SELECT ?value WHERE { wd:Q152176 p:P742 ?s . ?s ps:P742 ?x filter(contains(?x,'Didier Desroches')) . ?s pq:P31 ?value}
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q152176> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P742> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <Didier Desroches> .
?statement <http://www.wikidata.org/entity/P31> ?value. 
} 

When was the pseudonym "Didier Desroches" was used by Paul Eluard?