About: http://webisa.webdatacommons.org/214500974

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	The immediately above comments are also applicable to milling machine mechanisms, where the marking instrument is a tool which is urged against and away from a workpiece by the Z- axis modulation.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com