<http://webisa.webdatacommons.org/14899395>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nap.edu> .
<http://webisa.webdatacommons.org/14899395>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/340902041>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/14899395> .
<http://webisa.webdatacommons.org/14899395>	<http://www.w3.org/ns/prov#value>	"In recent years, however, the elevation of other risk concerns, such as security and environmental harm, has expanded and complicated the role of the federal government in controlling the risks associated with hazardous materials transportation." .