About: http://webisa.webdatacommons.org/302395866

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	Why it matters: These ultrafine aerosols are a major component of haze and contribute to health problems, such as chronic bronchitis, and are enough of a concern that the Environmental Protection Agency regulates their concentrations.
http://www.w3.org/ns/prov#wasQuotedFrom	pnnl.gov