In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.

"Merry Xmas Everybody" is a song by the British rock band Slade, released as a non-album single in 1973. The song was written by lead vocalist Noddy Holder and bassist Jim Lea, and produced by Chas Chandler. It was the band's sixth and final number-one single in the UK. Earning the UK Christmas Number One slot in December 1973, the song beat another Christmas-themed song, Wizzard's "I Wish It Could Be Christmas Everyday", which reached fourth place. It remained in the charts for nine weeks until February 1974. Question: How many copies were sold of the last UK number-one single that was written by Noddy Holder and Jim Lea? Answer: in excess of one million copies
Merry Xmas Everybody is a song by the British rock band Slade, released as a nonalbum single in 1973.