<http://webisa.webdatacommons.org/298321768>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/298321768>	<http://www.w3.org/ns/prov#value>	"Before welding, each joint should be prepared by cleaning the duct & fitting surfaces of any dirt, oil or other contaminant." .
<http://webisa.webdatacommons.org/prov/417756727>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/298321768> .
<http://webisa.webdatacommons.org/298321768>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<harrisonplastic.com> .
<http://webisa.webdatacommons.org/prov/111124348>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/298321768> .