About: http://webisa.webdatacommons.org/165762395

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	Cities including Charlotte, Los Angeles, New York, Atlanta, Philadelphia, Washington D.C. and Baltimore have seen improvements in air quality over the last decade.
http://www.w3.org/ns/prov#wasQuotedFrom	witn.com