For which film did Penélope Cruz win the Oscar for Best Supporting Actress?

For which film did Jennifer Hudson win the Oscar for Best Supporting Actress? Who won the Oscar for Best Supporting Actress for 'Michael Clayton'? For which film did Tilda Swinton win the Oscar for Best Supporting Actress? Who won the Oscar for Best Supporting Actress for 'Vicky Cristina Barcelona'? Who won the Oscar for Best Supporting Actress for 'Precious'? For which film did Mo'Nique win the Oscar for Best Supporting Actress? Who won the Oscar for Best Supporting Actress for 'The Fighter'? For which film did Melissa Leo win the Oscar for Best Supporting Actress?