About: http://webisa.webdatacommons.org/100012629

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	PIPE MARKING: Each standard and non-standard length of pipe or fitting shall be clearly marked with pipe size, pipe class, production code, material designation and other relevant identifying information.
http://www.w3.org/ns/prov#wasQuotedFrom	dot.gov