About: http://webisa.webdatacommons.org/269901796

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	Melatonin is a natural hormone segregated by the body and melatonin levels generally increase in the dark at night.
http://www.w3.org/ns/prov#wasQuotedFrom	medicalxpress.com