About: http://webisa.webdatacommons.org/45604187

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	Oyster shell calcium and coral calcium may contain heavy metal contaminants, such as lead or mercury, and should probably be avoided.
http://www.w3.org/ns/prov#wasQuotedFrom	uthct.edu