<http://webisa.webdatacommons.org/326427737>	<http://www.w3.org/ns/prov#value>	"These concerns about operating room pollution weaned away with the introduction of intravenous anesthetic agents, such as propofol, because it was believed propofol was excreted by systems other than the lungs." .
<http://webisa.webdatacommons.org/326427737>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<clinicaltrials.gov> .
<http://webisa.webdatacommons.org/326427737>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/303202570>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/326427737> .