Europa, which is slightly smaller than Earth's moon, has a thick icy crust, and may also have a liquid water mantle beneath this crust.
(Europa; is; slightly smaller than Earth's moon) (Europa; has; a thick icy crust) (Europa; may also have; a liquid water mantle beneath this crust)
Europa Europa Europa
is has may also have
slightly smaller than Earth's moon
a thick icy crust
a liquid water mantle beneath this crust