About: http://webisa.webdatacommons.org/445850378

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	ACKLEY: Well, the original system was put in the 1800s, the first gas systems, the 1850s or so, and it was mostly a cast iron and steel service line system.
http://www.w3.org/ns/prov#wasQuotedFrom	wwno.org