About: http://webisa.webdatacommons.org/455239716

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	It may be desirable to place a sifting or sorting mechanism upstream of the crusher to keep boulders and other undesirable materials from reaching the crusher.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es