About: http://webisa.webdatacommons.org/155637129

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	The two elements described above are defined by the isolation voltage withstood between the input source and the output source or sources, for example 4,000 volts.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com