About: http://webisa.webdatacommons.org/122091692

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	In humans, carotenoids such as beta-carotene are a precursor to vitamin A, a pigment essential for good vision, and carotenoids can also act as antioxidants (Sims and Odle 2005).
http://www.w3.org/ns/prov#wasQuotedFrom	newworldencyclopedia.org