Complex sentence: After his successful treatment, Mani Ratnam called him once more to play a role in one of his films, "Kadal" (2013), for which which Swamy lost 15 kilograms of weight in just a month.
Split into simpler sentences: After his successful treatment, Mani Ratnam called him once more to play a role in one of his films, "Kadal" (2013). With Ratnam's for which which Swamy lost 15 kilograms of weight in just a month.