Complex sentence: Cronus, the leader of the Titans, knew he was destined to be overcome by his own sons and, as a result, he devoured his children Demeter, Hestia, Hera, Hades, and Poseidon as soon as they were born.
Split into simpler sentences: Cronus, the leader of the Titans, knew that he was destined to be overcome by his own sons. As a result, he devoured his children Demeter, Hestia, Hera, Hades and Poseidon as soon as they were born.