About: http://webisa.webdatacommons.org/340975271

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	Certain foods such as tuna and salmon fishes, beef liver, egg yolk and mushroom will also offer some amounts of vitamin D. In order to attain proper amount of vitamin D, one may take 1000 mg of vitamin D regularly.
http://www.w3.org/ns/prov#wasQuotedFrom	vitaminlevels.com