About: http://webisa.webdatacommons.org/432835962

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	Such factors as differing residence times, microbial activity, and pump stations introduce ???sources of variability,??? Field said. ???More work has to be done,??? she said, to learn how to account for this variability.
http://www.w3.org/ns/prov#wasQuotedFrom	wef.org