About: http://webisa.webdatacommons.org/421198611

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 order to cut hard materials such as concrete, the cutting teeth 44 are necessarily made of a hard material such as diamond or a diamond-impregnated material.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com