<http://webisa.webdatacommons.org/47829137>	<http://www.w3.org/ns/prov#value>	"Living things require varying amounts of some heavy metals, such as iron and zinc." .
<http://webisa.webdatacommons.org/prov/92215137>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/47829137> .
<http://webisa.webdatacommons.org/47829137>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/94709225>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/47829137> .
<http://webisa.webdatacommons.org/47829137>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<learninghood.ca> .