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.

Ira Bernstein (b. Malverne, New York, 1959) is a dancer and teacher in the United States who specializes in traditional American dance forms such as Appalachian-style clogging, flatfoot dancing, tap dance, and step dancing. He is considered an authority on clogging, and the leading figure in this dance style. He calls himself a "percussive step dancer who specializes in Appalachian flatfooting," and also dances Green Grass style Appalachian clogging, English clogging, French-Canadian step dancing, Irish step dancing, and South African gumboot dancing. Question: What is the most important element of step dance, a style performed by Ira Bernstein? Answer: the footwork
Ira Bernstein b. Malverne, New York, 1959 is a dancer and teacher in the United States who specializes in traditional American dance forms such as Appalachianstyle clogging, flatfoot dancing, tap dance, and step dancing.

Anatoly Ivanovich Maltsev (also: Malcev, Mal'cev; Russian: Анато́лий Ива́нович Ма́льцев; 27 November N.S./14 November O.S. 1909, Moscow Governorate – 7 June 1967, Novosibirsk) was born in Misheronsky, near Moscow, and died in Novosibirsk, USSR. He was a mathematician noted for his work on the decidability of various algebraic groups. Malcev algebras (generalisations of Lie algebras) are named after him. Question: Which of the following is known for his work on the decidability of algebraic groups: Anatoly Maltsev or Vladimir Levenshtein? Answer: Anatoly Ivanovich Maltsev
Anatoly Ivanovich Maltsev also: Malcev, Malcev; Russian: Анато́лий Ива́нович Ма́льцев; 27 November N.S.14 November O.S. 1909, Moscow Governorate – 7 June 1967, Novosibirsk was born in Misheronsky, near Moscow, and died in Novosibirsk, USSR.

Renée Tondelli is a supervising sound editor, she is best known for her works on films such as "The Passion of the Christ" (2004), "Memoirs of a Geisha" (2005), "Django Unchained" (2012), "Lone Survivor" (2013), "American Hustle" (2013), "Into the Woods" (2014), "Deepwater Horizon" (2016) for which she was nominated for the Academy Award for Best Sound Editing () at 89th Academy Awards. Question: Which 2013 American film directed by David O. Russell did Renée Tondelli work on? Answer: American Hustle

Renée Tondelli is a supervising sound editor, she is best known for her works on films such as The Passion of the Christ 2004, Memoirs of a Geisha 2005, Django Unchained 2012, Lone Survivor 2013, American Hustle 2013, Into the Woods 2014, Deepwater Horizon 2016 for which she was nominated for the Academy Award for Best Sound Editing  at 89th Academy Awards.