About: http://webisa.webdatacommons.org/39091504

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	Current roofing systems are complex and innovative using rubbers, plastics, modified asphalts and other synthetic materials.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com