what is the {end time} for {Carlos Fuentes} has {pseudonym} as {Emmanuel Matta} ?
When did Carlos Fuentes go by Emmanuel Matta?
When did Carlos Fuentes use the alias Emmanuel Matta?
SELECT ?j WHERE { ?r property:end_time ?j . ?r property:pseudonym ?n . resource:Carlos_Fuentes property:pseudonym ?r . FILTER ( CONTAINS ( ?n , 'Emmanuel Matta' ) ) }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q154691> .
?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> <Emmanuel Matta> .
?statement <http://www.wikidata.org/entity/P582> ?value. 
} 

SELECT ?value WHERE { wd:Q154691 p:P742 ?s . ?s ps:P742 ?x filter(contains(?x , 'Emmanuel Matta')) . ?s pq:P582 ?value}