About: http://webisa.webdatacommons.org/347373519

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	raw material for humic acid is lignite coal, and the price of lignite coal is affected by factors such as market demand, quality
http://www.w3.org/ns/prov#wasQuotedFrom	sec.gov