@prefix dbo:	<http://dbpedia.org/ontology/> .
@prefix dbr:	<http://dbpedia.org/resource/> .
<http://dbpedia.org/resource/Zipper_(data_structure)>	dbo:wikiPageWikiLink	dbr:Observer_operation .
@prefix owl:	<http://www.w3.org/2002/07/owl#> .
dbr:Observer_operation	owl:sameAs	dbr:Observer_operation .