PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Using their unique expertise in chemistry, biology, geology, and hydrology, these researchers have been exploring emerging contaminants, such as flame-retardants, pharmaceuticals, personal care products, and industrial chemicals in the Columbia River.[Elena Nilsen] What we refer to as emerging contaminants can mean many different kinds of chemicals.
http://www.w3.org/ns/prov#wasQuotedFrom
  • usgs.gov