<http://webisa.webdatacommons.org/prov/297738889>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/121911535> .
<http://webisa.webdatacommons.org/121911535>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.ca> .
<http://webisa.webdatacommons.org/121911535>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/121911535>	<http://www.w3.org/ns/prov#value>	"Preferably, the facilitating agent used is a chelator or a chemical linking agent." .