@prefix owl:	<http://www.w3.org/2002/07/owl#> .
@prefix dbr:	<http://dbpedia.org/resource/> .
dbr:Phase_plate	owl:sameAs	dbr:Phase_plate .
@prefix dbo:	<http://dbpedia.org/ontology/> .
dbr:Optical_vortex	dbo:wikiPageWikiLink	dbr:Phase_plate .
dbr:Optical_transfer_function	dbo:wikiPageWikiLink	dbr:Phase_plate .