PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • and to perform activities including health education, health studies, surveillance, health consultations, and toxicological profiles.Surface waterWater on the surface of the earth, such as in lakes, rivers, streams, ponds, and springs [compare with groundwater].Surveillance [see epidemiologic surveillance]SurveyA systematic collection of information or data.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cdc.gov