Detailed 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.
See one example below:
Problem: North Willingham is a village and civil parish in the West Lindsey district of Lincolnshire, England. The population of the civil parish (including Sixhills) was 181 at the 2011 census. It is situated 3.5 mi east from the town of Market Rasen on the A631 road between Market Rasen and Louth. Question: Which had a bigger population at the 2011 census, North Willingham or Market Rasen? Answer: Market Rasen
Solution: Fact_1: North Willingham is a village and civil parish in the West Lindsey district of Lincolnshire, England. Fact_2: The population of the civil parish including Sixhills was 181 at the 2011 census.
Explanation: Here, we can see that both generated facts are helpful in answering question.

Problem: 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
Solution:
William Martin Joel born May 9, 1949 is an American singersongwriter and pianist.