For which film did Anne Hathaway win the Oscar for Best Supporting Actress?

For which film did Melissa Leo win the Oscar for Best Supporting Actress? Who won the Oscar for Best Supporting Actress for 'The Help'? For which film did Octavia Spencer win the Oscar for Best Supporting Actress? Who won the Oscar for Best Supporting Actress for 'Les Misérables'? Who won the Oscar for Best Supporting Actress for '12 Years a Slave'? For which film did Lupita Nyong'o win the Oscar for Best Supporting Actress? Who won the Oscar for Best Supporting Actress for 'Boyhood'? For which film did Patricia Arquette win the Oscar for Best Supporting Actress?