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.

Let me give you an example: 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
The answer to this example can be: 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.
Here is why: Here, we can see that both generated facts are helpful in answering question.

OK. solve this:
Earl Poole Ball (Jr) (born March 12, 1941) is an American singer-songwriter, pianist, music producer and actor. His musical work spans the Ameripolitan, Country, Americana and Rockabilly genres. He has performed with many well known American musicians, including Buck Owens & The Buckaroos, Gram Parsons, Carl Perkins, Merle Haggard, Freddie Hart, Marty Stuart, Phil Ochs, Michael Nesmith, Marty Robbins, Wynn Stewart, The Flying Burrito Brothers and The Byrds. He is best known for his 20 years spent touring and recording with Johnny Cash. (1977-1997) Question: What type of music do Freddie Hart and Earl Poole Ball both write? Answer: Country
Answer:
His musical work spans the Ameripolitan, Country, Americana and Rockabilly genres.