About: http://webisa.webdatacommons.org/291433428

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	Some professionals, such as teachers, policemen, and pilots, belong to labor unions, which have specific negotiation and labor law procedures that protect union members.
http://www.w3.org/ns/prov#wasQuotedFrom	avvo.com