PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Yet population growth, climatic variability, and land uses such as mining and agricultural practices along the U.S.-Mexico border challenge our ability to manage clean groundwater aquifers in this region that support populations, agriculture, industry and riparian ecosystems.
http://www.w3.org/ns/prov#wasQuotedFrom
  • usda.gov