About: http://webisa.webdatacommons.org/9173402

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	In an attempt to remove tar and other deposits from teeth, products such as toothpastes and gels were developed which claim to remove tobacco tar.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com