About: http://webisa.webdatacommons.org/352232666

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	However, nonpoint sources of pollution, such as urban and agricultural runoff and atmospheric input, still cause severe water quality problems.
http://www.w3.org/ns/prov#wasQuotedFrom	nap.edu