About: http://webisa.webdatacommons.org/400625469

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	Pollution, mostly soot and sulfuric acid from automobile emissions, had significantly degraded the original fresco, altering the colors and concealing the details under a thick layer of dirt.
http://www.w3.org/ns/prov#wasQuotedFrom	uchicago.edu