Question:
Who was the chair of Federal Transit Administration in Apr, 1981?

Context:
 Alfred A. DelliBovi is the chair of Federal Transit Administration from Jan, 1987 to Jan, 1989. 
 Arthur Teele is the chair of Federal Transit Administration from Jan, 1981 to Jan, 1983. 
 Gordon Linton is the chair of Federal Transit Administration from Jan, 1993 to Jan, 1999.

Answer:
Question:
Who was the chair of Federal Transit Administration in Apr, 1981?

Context:
 Alfred A. DelliBovi is the chair of Federal Transit Administration from Jan, 1987 to Jan, 1989. 
 Arthur Teele is the chair of Federal Transit Administration from Jan, 1981 to Jan, 1983. 
 Gordon Linton is the chair of Federal Transit Administration from Jan, 1993 to Jan, 1999.

Answer:
user
Arthur Teele
assistant
Question:
Who was the chair of Federal Transit Administration in Apr, 1981?

Context:
 Alfred A. DelliBovi is the chair of Federal Transit Administration from Jan, 1987 to Jan, 1989. 
 Arthur Teele is the chair of Federal Transit Administration from Jan, 1981 to Jan, 1983. 
 Gordon Linton is the chair of Federal Transit Administration from Jan, 1993 to Jan, 1999.

Answer:
user
Alfred A. DelliBovi
Gordon Linton
assistant
Question:
Who was the chair of Federal Transit Administration in Apr, 1981?

Context:
 Alfred A. DelliBovi is the chair of Federal Transit Administration from Jan, 1987 to Jan, 1989. 
 Arthur Teele is the chair of Federal Transit Administration from Jan, 1981 to Jan, 1983. 
 Gordon Linton is the chair of Federal Transit Administration from Jan, 1993 to Jan, 1999.

Answer:
user
Arthur Teele
assistant