About: http://webisa.webdatacommons.org/415853520

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	Basically, such a sensor is an optical device that generates light of a prescribed wavelength, directs the light into the blood, and measures the amount of light reflected from the blood.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com