<http://webisa.webdatacommons.org/prov/389562786>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/197036499> .
<http://webisa.webdatacommons.org/197036499>	<http://www.w3.org/ns/prov#value>	"Heavy metals cause direct toxicity to tissues, poisoning enzyme systems and especially affecting the nervous system." .
<http://webisa.webdatacommons.org/197036499>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<healthy.net> .
<http://webisa.webdatacommons.org/197036499>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .