About: http://webisa.webdatacommons.org/411007678

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	Further, the light pen includes the light source, such as a light emitting diode, to generate the light, it is inevitable to cause an increase in its weight and volume and manufacturing cost.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com