About: http://webisa.webdatacommons.org/314386964

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 many cases, nutrients such as zinc are combined with a composition including lead.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com