About: http://webisa.webdatacommons.org/405347414

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	The key to deep mining is controlling cave-ins, dispersing gas, particularly methane and carbon dioxide, and suppressing coal dust.
http://www.w3.org/ns/prov#wasQuotedFrom	teachwithmovies.org