About: http://webisa.webdatacommons.org/211679730

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	The performance of a roof is measured based on its life span and it is effectiveness to retain their strength, chemical and physical properties, appearance and resistance to all forms of failure.
http://www.w3.org/ns/prov#wasQuotedFrom	weebly.com