About: http://webisa.webdatacommons.org/250808151

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	Further complicating the determination of an RDA for vitamin D is that its supply depends on other factors, including sun exposure (5), body mass index (BMI) (6), and skin color (7???8).
http://www.w3.org/ns/prov#wasQuotedFrom	annals.org