PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It???s commonplace for customers to ask, ???how do I get calcium out of my pool???? This is a big problem because our fill water in the southwest is loaded with calcium and other hardness minerals which cause total dissolved solids to rise in the swimming pools.
http://www.w3.org/ns/prov#wasQuotedFrom
  • poolservicestech.com