TASK DEFINITION: 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.
PROBLEM: Farrokh "Freddie" Mercury (born Bulsara; 5 September 1946 – 24 November 1991) was a British singer, songwriter and record producer, known as the lead vocalist of the rock band Queen. He was known for his flamboyant stage persona and four-octave vocal range. Mercury wrote numerous hits for Queen, including "Bohemian Rhapsody", "Killer Queen", "Somebody to Love", "Don't Stop Me Now", "Crazy Little Thing Called Love", and "We Are the Champions". He led a solo career while performing with Queen, and occasionally served as a producer and guest musician for other artists. Question: Barcelona is the second solo album recorded by a singer known for his four-octave what? Answer: vocal range

SOLUTION: Farrokh Freddie Mercury born Bulsara; 5 September 1946 – 24 November 1991 was a British singer, songwriter and record producer, known as the lead vocalist of the rock band Queen.

PROBLEM: Surfing with the Alien is the second studio album by American rock guitarist Joe Satriani. It was released on October 15, 1987, by Relativity Records. The album is one of Satriani's most successful to date and helped establish his reputation as a respected rock guitarist. Question: How many albums has the artist who released his second studio album on October 15, 1987 sold? Answer: over 10 million

SOLUTION: Surfing with the Alien is the second studio album by American rock guitarist Joe Satriani.

PROBLEM: Florence Reece (1900–1986) was an American social activist, poet, and folksong writer. She is best known for the song ""Which Side Are You On?"" which she wrote in 1931 during the Harlan County strike. Question: During the Harlan County War, a series of coal mining-related skirmishes, Florence Reece wrote what acclaimed folksong? Answer: "Which Side Are You On?"

SOLUTION:
Florence Reece 1900–1986 was an American social activist, poet, and folksong writer.