Question: For what roles did Nisha Kalema win 3 Best Actress Awards at the Uganda Film Festival Awards in 2015, 2016 and 2018?
Answer: Nisha Kalema won 3 Best Actress Awards at the Uganda Film Festival Awards in 2015, 2016 and 2018 for her roles as Grace in The Tailor, Amelia in Freedom and Veronica in Veronica's Wish respectively.