<http://webisa.webdatacommons.org/313694871> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/prov/300899689> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/313694871> . <http://webisa.webdatacommons.org/313694871> <http://www.w3.org/ns/prov#wasQuotedFrom> <waterpurifier.org> . <http://webisa.webdatacommons.org/313694871> <http://www.w3.org/ns/prov#value> "As water purifiers need to be replaced regularly, the cost is an important aspect in choosing the right one." .