About: http://webisa.webdatacommons.org/405929453

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	There are supposed to be rules and contractor licensing, and a requirement that they have some sort of certification and insurance.
http://www.w3.org/ns/prov#wasQuotedFrom	scienceblogs.com