About: http://webisa.webdatacommons.org/391536533

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	As people age, they tend to get less vitamin D from natural sources such as sunlight or foods such as fish and milk.
http://www.w3.org/ns/prov#wasQuotedFrom	sciencedaily.com