About: http://webisa.webdatacommons.org/142371105

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	But as low as we can go, we still find vents, so it is a reasonable assumption that there are vents all of the way, and all of them pumping out hydrogen sulphide, carbon dioxide, and other gasses.
http://www.w3.org/ns/prov#wasQuotedFrom	joannenova.com.au