Complex sentence: Goddess Lakshmi birthday falls on the day of Diwali and also during the 5th incarnation of Lord Vishnu, he rescues Goddess Lakshmi from the prison of King Bali.
Split into simpler sentences: Goddess Lakshmi birthday falls on the day of Diwali. During the 5th incarnation of Lord Vishnu, he rescues Goddess Lakshmi from the prison of King Bali.