About: http://webisa.webdatacommons.org/406849214

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	While the method and guide described above do not require the use of a particular type of blade, I have also invented a blade which is especially convenient for making an arcuate cut such as that shown at 11 in FIG. 1.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk