About: http://webisa.webdatacommons.org/307170660

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 conditions involved are particularly difficult to meet if for physical reasons the optoelectronic elements and filters have to be as small as possible as is the case, for example, for measurements at an earlobe, a finger or a toe.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es