About: http://webisa.webdatacommons.org/405624009

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	There is a need for increased productivity in cutting and breaking hard, strong substances such as rock, pavement and frozen earth.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com