Complex sentence: Clotho was the daughter of Zeus and Themis and sister to Lachesis and Atropos according to Greek mythology, although in Roman mythology it was believed that she was daughter of Uranus, and Gaia.
Split into simpler sentences: Clotho was the daughter of Zeus and Themis and sister to Lachesis and Atropos according to Greek mythology. Although in Roman mythology it was believed that she was daughter of Uranus, and Gaia.