Question:
Who was the chair of MIT Department of Economics in Aug, 1983?

Context:
 Robert Lyle Bishop is the chair of MIT Department of Economics from Jan, 1958 to Jan, 1964. 
 Edgar Cary Brown is the chair of MIT Department of Economics from Jan, 1964 to Jan, 1982. 
 Ann Friedlaender is the chair of MIT Department of Economics from Jan, 1983 to Jan, 1984. 
 Ralph E. Freeman is the chair of MIT Department of Economics from Jan, 1933 to Jan, 1958. 
 Davis Rich Dewey is the chair of MIT Department of Economics from Jan, 1893 to Jan, 1933.

Answer:
Question:
Who was the chair of MIT Department of Economics in Aug, 1983?

Context:
 Robert Lyle Bishop is the chair of MIT Department of Economics from Jan, 1958 to Jan, 1964. 
 Edgar Cary Brown is the chair of MIT Department of Economics from Jan, 1964 to Jan, 1982. 
 Ann Friedlaender is the chair of MIT Department of Economics from Jan, 1983 to Jan, 1984. 
 Ralph E. Freeman is the chair of MIT Department of Economics from Jan, 1933 to Jan, 1958. 
 Davis Rich Dewey is the chair of MIT Department of Economics from Jan, 1893 to Jan, 1933.

Answer:
user
Ann Friedlaender
assistant
Question:
Who was the chair of MIT Department of Economics in Aug, 1983?

Context:
 Robert Lyle Bishop is the chair of MIT Department of Economics from Jan, 1958 to Jan, 1964. 
 Edgar Cary Brown is the chair of MIT Department of Economics from Jan, 1964 to Jan, 1982. 
 Ann Friedlaender is the chair of MIT Department of Economics from Jan, 1983 to Jan, 1984. 
 Ralph E. Freeman is the chair of MIT Department of Economics from Jan, 1933 to Jan, 1958. 
 Davis Rich Dewey is the chair of MIT Department of Economics from Jan, 1893 to Jan, 1933.

Answer:
user
Robert Lyle Bishop
Ralph E. Freeman
Davis Rich Dewey
Edgar Cary Brown
assistant
Question:
Who was the chair of MIT Department of Economics in Aug, 1983?

Context:
 Robert Lyle Bishop is the chair of MIT Department of Economics from Jan, 1958 to Jan, 1964. 
 Edgar Cary Brown is the chair of MIT Department of Economics from Jan, 1964 to Jan, 1982. 
 Ann Friedlaender is the chair of MIT Department of Economics from Jan, 1983 to Jan, 1984. 
 Ralph E. Freeman is the chair of MIT Department of Economics from Jan, 1933 to Jan, 1958. 
 Davis Rich Dewey is the chair of MIT Department of Economics from Jan, 1893 to Jan, 1933.

Answer:
user
Ann Friedlaender
assistant