Complex sentence: However, in Roman mythology the sun-god Helios is adopted again only in his Latin name, which is Sol. Phaeton went to his father who swore by the river Styx to give Phaeton anything he should ask for in order to prove his divine paternity.
Split into simpler sentences: However, in Roman mythology the sun-god Helios is adopted again only in his Latin name, which is Sol. CD MLA Style Encyclopædia Britannica, "Helios: 2010 Desktop Encyclopedia CD. Encyclopædia Britannica, 2010" Phaeton went to his father who swore by the river Styx to give Phaeton anything he should ask for in order to prove his divine paternity.