Complex sentence: Venerable Khyongla Rato Rinpoche studied at the original Rato monastery when he was a young monk, and in 2014 he is the monastery's head lama (spiritual teacher).
Split into simpler sentences: Venerable Khyongla Rato Rinpoche studied at the original Rato Monastery when he was a young monk. In 2014 Khyongla Rato is Rato Monastery's head lama (spiritual teacher).