About: http://webisa.webdatacommons.org/81404957

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	Typically, in such oximetry sensors, a light source, such as a light emitting diode (LED), is used to alternately direct light of twodifferent wavelengths, such as red light and infrared light, to the blood through the skin.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com