Who collaborated with Swift for the song "Breathe" on her "Fearless" album?

Colbie Caillat

Who directed the 2013 sci-fi epic "Gravity"? What American football team won the first-ever Super Bowl? What was America's first successful manned moon mission called? Who famously scaled the walls of Chapultepec Fortress in the Mexican-American War, becoming U.S. President later on? Who wrote the epic poem 'Paradise Lost'?