About: http://webisa.webdatacommons.org/29999130

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	Cast and wrought iron products had been used extensively in building, especially in the 19th century, but were largely superseded by the beginning of the 20th century by hot-rolled steel members.
http://www.w3.org/ns/prov#wasQuotedFrom	ochshorndesign.com