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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	They also include sands made up of 99 percent quartz or silica, and this includes sands that have been washed or scrubbed to remove silt and clay size particles, carbonate cement, iron coatings and other minerals.
http://www.w3.org/ns/prov#wasQuotedFrom	wellservicingmagazine.com