Question: In what year was the man born who coached The 1973 Indiana Hoosiers football team?

Context articles: 1946 Indiana Hoosiers football team
1976 Indiana Hoosiers football team
1973 Indiana Hoosiers football team
1947 Indiana Hoosiers football team
1956 Indiana Hoosiers football team
1979 Indiana Hoosiers football team
Lee Corso
Bob Stephenson (American football)
1964 Indiana Hoosiers football team
1937 Indiana Hoosiers football team

The 1946 Indiana Hoosiers football team represented the Indiana Hoosiers in the 1946 Big Ten Conference football season.
 The Hoosiers played their home games at Memorial Stadium in Bloomington, Indiana.
 The team was coached by Bo McMillin, in his 13th year as head coach of the Hoosiers.
 Fullback Pete Pihos was named the team's most valuable player.
The 1976 Indiana Hoosiers football team was an American football team that represented the Indiana Hoosiers in the 1976 Big Ten Conference football season.
 The Hoosiers played their home games at Memorial Stadium in Bloomington, Indiana.
 The team was coached by Lee Corso, in his fourth year as head coach of the Hoosiers.
The 1973 Indiana Hoosiers football team represented the Indiana Hoosiers in the 1973 Big Ten Conference football season.
 The Hoosiers played their home games at Memorial Stadium in Bloomington, Indiana.
 The team was coached by Lee Corso, in his first year as head coach of the Hoosiers.
The 1947 Indiana Hoosiers football team represented the Indiana Hoosiers in the 1947 Big Nine Conference football season.
 The team compiled a 5–3–1 record (2–3–1 in conference play), and finished in tie for sixth place in the Big Ten Conference.
 The Hoosiers played their home games at Memorial Stadium in Bloomington, Indiana.
 The team was coached by Bo McMillin, in his 14th and final year as head coach of the Hoosiers.
 McMillin retired from his position as head coach at the end of the year.
The 1956 Indiana Hoosiers football team was an American football team that represented the Indiana Hoosiers in the 1956 Big Ten Conference football season.
 The Hoosiers played their home games at Memorial Stadium in Bloomington, Indiana.
 The team was coached by Bernie Crimmins, in his fifth and final year as head coach of the Hoosiers.
 On November 28, 1956, Crimmins, at age 37, resigned as Indiana's head football coach.
 He had compiled a 13–32 record and was unable to produce a winning team in five years in the position.
The 1979 Indiana Hoosiers football team represented the Indiana Hoosiers in the 1979 Big Ten Conference football season.
 The Hoosiers played their home games at Memorial Stadium in Bloomington, Indiana.
 The team was coached by Lee Corso, in his seventh year as head coach of the Hoosiers.
 The Hoosiers participated in the Holiday Bowl, in a post-season matchup against BYU.
 The Hoosiers won 38–37.
Lee Corso (born August 7, 1935) is an American sports broadcaster and football analyst for ESPN and former coach.
 He has been a featured analyst on ESPN's "College GameDay" program since its inception in 1987.
 Corso served as the head football coach at the University of Louisville from 1969, to 1972, at Indiana University Bloomington from 1973 to 1982, and at Northern Illinois University in 1984, compiling a career college football coaching record of 73–85–6.
 He was the head coach for the Orlando Renegades of the United States Football League in 1985, tallying a mark of 5–13.
Robert E. "Bob" Stephenson (born September 20, 1959) is a former American football player.
 A native of Evansville, Indiana, Stephenson He played college football as a tight end for the Indiana University Hoosiers football team from 1979 to 1981.
 As a member of the 1979 Indiana Hoosiers football team, he played in the 1979 Holiday Bowl and scored the first touchdown in a bowl game in Indiana Hoosiers football history.
 He was selected by both the coaches (UPI) and media (AP) as the first-team tight end on the 1981 All-Big Ten Conference football team.
 He was selected as the tight end on the all-time Indiana football teams named by the "Chicago Tribune" in 1993 and by "Inside Indiana" magazine.
 He was inducted into the Indiana Football Hall of Fame in 2007.
The 1964 Indiana Hoosiers football team represented the Indiana Hoosiers in the 1964 Big Ten Conference football season.
 The Hoosiers played their home games at Seventeenth Street Stadium in Bloomington, Indiana.
 The team was coached by Phil Dickens, in his seventh and final year as head coach of the Hoosiers.
The 1937 Indiana Hoosiers football team represented the Indiana Hoosiers in the 1937 Big Ten Conference football season.
 The Hoosiers played their home games at Memorial Stadium in Bloomington, Indiana.
 The team was coached by Bo McMillin, in his fourth year as head coach of the Hoosiers.
 Corbett Davis was selected as the team's most valuable player and also won the "Chicago Tribune" Silver Football as the most valuable player in the Big Ten Conference.