About: http://webisa.webdatacommons.org/148874509

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	Alternately, a sleep sensor may be employed that determines when a patient has actually fallen asleep based on factors such as body position, respiration rate, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com