About: http://webisa.webdatacommons.org/375454913

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	(1) The potential for confounding by co-occurring pollutants, especially PM 2.5, has been addressed with co-pollutant models in only a relatively small number of PM 10-2.5 epidemiological studies (U.S. EPA, 2009a, section 2.3.3).
http://www.w3.org/ns/prov#wasQuotedFrom	federalregister.gov