About: http://webisa.webdatacommons.org/145540440

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 hormone made by the pineal gland in the brain and secreted at night on a circadian, or 24 hour, cycle, to make people feel sleepy.
http://www.w3.org/ns/prov#wasQuotedFrom	bio-medicine.org