ROME: This year's Venice Film Festival will include Kristen Stewart in a sci-fi romance, a war story with Idris Elba and a thriller starring Tilda Swinton and Dakota Johnson. Organizers announced a 21-strong competition lineup Wednesday that includes Drake Doremus' futuristic 'Equals,' with Stewart and Nicholas Hoult; Luca Guadagnino's 'A Bigger Splash,' with Swinton, Johnson and Ralph Fiennes; and Cary Fukunaga's African-set war story 'Beasts of No Nation,' starring Elba. Competition for the Golden Lion also includes Charlie Kaufman and Duke Johnson's animated feature 'Anomalisa'; musician Laurie Anderson's 'Heart of a Dog'; and 'The Danish Girl' from 'The King's Speech' director Tom Hooper. The 72nd Venice festival opens Sept. 2 with the world premiere of Baltasar Kormakur's mountain drama 'Everest,' starring Jake Gyllenhaal and Robin Wright. It runs to Sept. 12.