About: http://webisa.webdatacommons.org/243557696

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	Public attitudes changed in the 1950s and 1960s because cities such as London, Pittsburgh, and Osaka grew so polluted that they became almost unlivable.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com