Complex sentence: After returning to Sri Lanka he served as a professor and Dean of Theology at the National Seminary in Kandy from 1976 to 1986, after which he was Rector of St. Francis Xavier's Major Seminary in Jaffna for ten years.
Split into simpler sentences: After returning to Sri Lanka he served as a professor and Dean of Theology at the National Seminary in Kandy from 1976 to 1986. He was Rector of St. Francis Xavier's Major Seminary in Jaffna for ten years.