About: http://webisa.webdatacommons.org/274027680

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	Prior art solutions to the problem have generally been complex, since electrical or other power must be supplied from a reliable source to the moving monitoring device by slip rings or some other such physical agency.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es