PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The U.S. Environmental Protection Agency (EPA) today announced its call for nominations for the 2015 Presidential Green Chemistry Challenge Awards for companies or institutions that have developed a new process or product that helps protect public health and the environment. ???The Presidential Green Chemistry Challenge is an opportunity for ...
http://www.w3.org/ns/prov#wasQuotedFrom
  • environmental-expert.com