About: http://webisa.webdatacommons.org/424521893

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, secreted by the pineal gland that controls the biological clock and signals the entry into sleep.
http://www.w3.org/ns/prov#wasQuotedFrom	vitacost.com