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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	For water softening, three types of salt are generally sold: - Rock salt - Solar salt - Evaporated salt Rock salt as a mineral occurs naturally in the ground.
http://www.w3.org/ns/prov#wasQuotedFrom	lenntech.com