About: http://webisa.webdatacommons.org/53185366

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	Obstacles that may be present at a mining site might include vehicles such as trucks, mining workers, other site equipment and rocks, see 180.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk