<http://webisa.webdatacommons.org/prov/261990568>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/180227968> .
<http://webisa.webdatacommons.org/180227968>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/180227968>	<http://www.w3.org/ns/prov#value>	"Ozone also forms indoors from operation of certain increasingly popular electronic ???air purifiers,??? as well as printers, faxes and other office equipment." .
<http://webisa.webdatacommons.org/prov/318869923>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/180227968> .
<http://webisa.webdatacommons.org/180227968>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<acs.org> .