About: http://webisa.webdatacommons.org/344924070

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	Over the centuries, a variety of materials have served as home roofing, including asphalt shingles, wood shingles and different kinds of slate or clay tiling.
http://www.w3.org/ns/prov#wasQuotedFrom	sfgate.com