<http://webisa.webdatacommons.org/prov/426332204>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/442620652> .
<http://webisa.webdatacommons.org/prov/455762477>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/442620652> .
<http://webisa.webdatacommons.org/442620652>	<http://www.w3.org/ns/prov#value>	"chemicals such as acids or formaldehyde may be necessary for the" .
<http://webisa.webdatacommons.org/442620652>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<unu.edu> .
<http://webisa.webdatacommons.org/442620652>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .