About: http://webisa.webdatacommons.org/245129586

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	Parts per million, a way of expressing tiny concentrations of pollutants in air, water, soil, human tissue, food, or other products.
http://www.w3.org/ns/prov#wasQuotedFrom	wcponline.com