About: http://webisa.webdatacommons.org/40997421

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	Virtually nothing was known about the moons, except for their orbits, orbital periods and rough sizes.
http://www.w3.org/ns/prov#wasQuotedFrom	esa.int