@prefix dbo:	<http://dbpedia.org/ontology/> .
@prefix dbr:	<http://dbpedia.org/resource/> .
dbr:Drinking_water	dbo:wikiPageWikiLink	<http://dbpedia.org/resource/File:Water_system.pdf> .
<http://dbpedia.org/resource/2022_in_environmental_sciences>	dbo:wikiPageWikiLink	<http://dbpedia.org/resource/File:Water_system.pdf> .
@prefix owl:	<http://www.w3.org/2002/07/owl#> .
<http://dbpedia.org/resource/File:Water_system.pdf>	owl:sameAs	<http://dbpedia.org/resource/File:Water_system.pdf> .