About: http://webisa.webdatacommons.org/30677928

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	Volcanoes emit sulphur mainly in the form of sulphur dioxide, but some hydrogen sulphide is released too; this is why the smell of volcanoes is mainly that of SO2 (burning match) rather than bad eggs.
http://www.w3.org/ns/prov#wasQuotedFrom	bris.ac.uk