PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Mussels are threatened by changes in flow patterns within rivers caused by dams, dikes, and levees; by sediment increases in rivers and streams; and by invasive species, such as zebra mussels and Asian carps, that compete with mussels for food.
http://www.w3.org/ns/prov#wasQuotedFrom
  • usgs.gov