Instructions: 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.
Input: William Martin Joel (born May 9, 1949) is an American singer-songwriter and pianist. He was born in the Bronx, New York, and raised on Long Island, New York, places which have a heavy influence on his songs. Since releasing his first hit song, "Piano Man", in 1973, Joel has become the sixth best-selling recording artist and the third best-selling solo artist in the United States. His compilation album "Greatest Hits Vol. 1 & 2" is one of the best-selling albums in the US. Question: Root Beer Rag is a song from the 1974 albuim by what American pianist? Answer: William Martin Joel
Output:
William Martin Joel born May 9, 1949 is an American singersongwriter and pianist.