About: http://webisa.webdatacommons.org/122242566

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 operation, the boom or other member being controlled is usually first positioned for operation and is ordinarily thereafter retained in the adjusted position while being used.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com