Original sentence: Leonidas of Epirus or Leuconides , was a kinsman of Olympias, the mother of Alexander the Great, who was entrusted with the main superintendence of Alexander's education in his earlier years, apparently before he became student of Aristotle
Edited sentence: Leonidas of Epirus or Leuconides, was a kinsman of Olympias, the mother of Alexander the Great, who was entrusted with the main superintendence of Alexander's education in his earlier years, apparently before he became student of Aristotle