Complex sentence: Cressida belongs to the Portia Group of satellites, which includes Bianca, Desdemona, Juliet, Portia, Rosalind, Cupid, Belinda and Perdita.
Split into simpler sentences: Cressida belongs to the Portia Group of satellites. Which includes Bianca, Desdemona, Juliet, Portia, Rosalind, Cupid, Belinda and Perdita.