About: http://webisa.webdatacommons.org/207027612

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	More studies are needed to determine if melatonin is effective and safe for some forms of insomnia, particularly for long-term use.
http://www.w3.org/ns/prov#wasQuotedFrom	more.com