About: http://webisa.webdatacommons.org/420146544

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 a particularly advantageous specific embodiment of the present invention, the working tool is a drilling and/or impact hammer (called ???hammer??? below).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com