About: http://webisa.webdatacommons.org/333020933

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	Because the original cast materials were found to be extremely expensive to manufacture and install at present-day labor costs, an investigation of available pipe, materials, fittings and types of joints was conducted.
http://www.w3.org/ns/prov#wasQuotedFrom	sfmuseum.org