Complex sentence: Laius had the baby left out in the woods to die, but he was taken by a shepherd and given to King Polybus and Queen Merope (or Periboea) of Corinth.
Split into simpler sentences: Laius had the baby left out in the woods to die. He was found by a shepherd and given to King Polybus and Queen Merope (or Periboea) of Corinth.