About: http://webisa.webdatacommons.org/242042227

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	Alternatively, the optical change can be measured by an implanted optical detector, i.e., a photosensor-phototransistor coupled with a light source such as a light emitting diode.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com