About: http://webisa.webdatacommons.org/339519083

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	As coal was used mainly for industry and electricity generation, decrease in coal production caused serious problems in industrial production and electricity generation.
http://www.w3.org/ns/prov#wasQuotedFrom	reference.com