About: http://webisa.webdatacommons.org/65238552

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	The most important step is to test water quality before fracturing begins in order to establish a benchmark of water quality, and then to retest it periodically.
http://www.w3.org/ns/prov#wasQuotedFrom	columbia.edu