Task: Explanation
Input (English): Sarah Ellen Polley {'1': ", '2': ", '3': ", '4': "} (born January 8, 1979) is a Canadian actress, writer, director and political activist. Polley first garnered attention as a child actress for her role as Sara Stanley in the Canadian television series "Road to Avonlea" (1990–1996). She has starred in many feature films, including "Exotica" (1994), "The Sweet Hereafter" (1997), "Guinevere" (1999), "Go" (1999), "The Weight of Water" (2000), "My Life Without Me" (2003), "Dawn of the Dead" (2004), "Splice" (2009), and "Mr. Nobody" (2009). Question: In what film did David Wharnsby's wife star in 2004? Answer: Dawn of the Dead
Output (English):  She has starred in many feature films, including Exotica 1994, The Sweet Hereafter 1997, Guinevere 1999, Go 1999, The Weight of Water 2000, My Life Without Me 2003, Dawn of the Dead 2004, Splice 2009, and Mr. Nobody 2009.