About: http://webisa.webdatacommons.org/185740352

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	Relatively hard materials, such as ceramic tile, however, are better removed with a relatively steep leading angle of the cutting edges 212 in order to provide a greater scraping force on the floor covering 30.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com