About: http://webisa.webdatacommons.org/237102007

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	As is known in building construction, modem multi story buildings have concrete floor reinforced with steel, while older buildings may have floors made of another material such as wood.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com