For @en text alone, a single item from the Wikidata dump contains multiple names:
<http://www.wikidata.org/entity/Q26> <http://www.w3.org/2000/01/rdf-schema#label> "Northern Ireland"@en .
<http://www.wikidata.org/entity/Q26> <http://www.w3.org/2004/02/skos/core#prefLabel> "Northern Ireland"@en .
<http://www.wikidata.org/entity/Q26> <http://schema.org/name> "Northern Ireland"@en .
On the Wikidata page for this article (http://www.wikidata.org/entity/Q26), which of these (if any) corresponds to the canonicalized name used on the associated (English) the Wikipedia page?