<http://webisa.webdatacommons.org/397891446>	<http://www.w3.org/ns/prov#value>	"Copper is an essential nutrient to all higher plants and animals." .
<http://webisa.webdatacommons.org/prov/98854930>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/397891446> .
<http://webisa.webdatacommons.org/397891446>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/397891446>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<daviddarling.info> .