About: http://webisa.webdatacommons.org/241587198

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	However, even essential metals such as zinc and copper are toxic at high concentrations.
http://www.w3.org/ns/prov#wasQuotedFrom	nih.gov