What is {software version} of {Perl} that is {publication date} is {2014-10-1} ?
On the date of October 1st, 2014 Perl published which version of their software?
What software version of Perl was published on October 1st, 2014?
SELECT ?f WHERE { resource:Perl property:software_version_identifier ?r . ?r property:software_version_identifier ?f . FILTER ( CONTAINS ( YEAR ( ?d ) , '2014' ) ) . ?r property:publication_date ?d }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q42478> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P348> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P577> <2014-10-1>
} 

SELECT ?obj WHERE { wd:Q42478 p:P348 ?s . ?s ps:P348 ?obj . ?s pq:P577 ?x filter(contains(YEAR(?x),'2014')) }