About: http://webisa.webdatacommons.org/365800978

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	Pipes change color mainly because resin collect sthe more you smoke with it and that coat of resin is what causes the color change.
http://www.w3.org/ns/prov#wasQuotedFrom	grasscity.com