About: http://webisa.webdatacommons.org/187944136

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	A wide range of health problems is associated with exposure to heavy metals such as lead, selenium, and mercury that may be present in coal dust.
http://www.w3.org/ns/prov#wasQuotedFrom	akaction.org