Frédéric Back, 89, who won two Oscars for his poignant animated short films, died Tuesday morning at home in Montreal, said his daughter, Suzel Back-Drapeau. The cause was cancer. A beloved figure in the world of animation, Back was nominated for four Oscars over the course of his career. He was also a prolific artist and illustrator, getting his start in the graphics department of Radio-Canada’s