Input (grade 12): "Happy Xmas (War Is Over)" is a song written by John Lennon and Yoko Ono and released in 1971 as a single by John & Yoko\/Plastic Ono Band with the Harlem Community Choir.
Output (grade 6): "Happy Xmas (War Is Over)" is a Christmas song by John Lennon, Yoko Ono and the The Plastic Ono Band.