Question: who brutally slapped Sheila? If there is no answer, please output "Insufficient information to provide an answer.". Movie title: The Killers Context: The Killers is an adaptation of a short story by Ernest Hemingway. The story is divided into three scenes. The first and third scenes were directed by Beiku and Tarkovsky, the second by Gordon. The first scene shows Nick Adams (Yuli Fait) observing two gangsters (Valentin Vinogradov and Boris Novikov) in black coats and black hats entering a small-town diner where Adams is eating. They tell the owner, George (Aleksandr Gordon), that they are searching for the boxer Ole Andreson and that they want to kill him. They tie up Nick Adams and the cook, and wait for Ole Andreson to appear. Three customers enter the restaurant and are sent away by George. One of the customers is played by Tarkovsky, who whistles Lullaby of Birdland. The second scene shows Nick Adams visiting Ole Andreson (Vasiliy Shukshin) in his hide-out, a small room. He warns Andreson about the two gangsters, but Andreson is resigned to his fate and unwilling to flee. The third scene shows Adams returning to the diner and informing the owner of Andreson's decision.
Answer:
Insufficient information to provide an answer.