About: http://webisa.webdatacommons.org/117917009

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	Above all, such global problems as acid rain caused by SOx and NOx emissions and air pollution caused by particulates have become serious in recent years.
http://www.w3.org/ns/prov#wasQuotedFrom	osti.gov