About: http://webisa.webdatacommons.org/213179724

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	IO is the most volcanic of the moons, and Callisto is the icy one- and under the layer of ice is water (probably, says nasa).
http://www.w3.org/ns/prov#wasQuotedFrom	zapcomic.com