About: http://webisa.webdatacommons.org/31503591

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	Graying has also been linked to use of certain antibiotics (tetracycline) before the teeth are fully formed or industrial exposure to some metals such as iron or manganese.
http://www.w3.org/ns/prov#wasQuotedFrom	duanereade.com