Question:
Who was the head of Karl-Marx-Stadt District in Jan, 1990?

Context:
 Werner Felfe is the head of the government of Karl-Marx-Stadt District from Jan, 1960 to Jan, 1963. 
 Albrecht Buttolo is the head of the government of Karl-Marx-Stadt District from Jan, 1990 to Jan, 1990. 
 Heinz Arnold is the head of the government of Karl-Marx-Stadt District from Jan, 1963 to Jan, 1981. 
 Lothar Fichtner is the head of the government of Karl-Marx-Stadt District from Jan, 1981 to Jan, 1989.

Answer:
Question:
Who was the head of Karl-Marx-Stadt District in Jan, 1990?

Context:
 Werner Felfe is the head of the government of Karl-Marx-Stadt District from Jan, 1960 to Jan, 1963. 
 Albrecht Buttolo is the head of the government of Karl-Marx-Stadt District from Jan, 1990 to Jan, 1990. 
 Heinz Arnold is the head of the government of Karl-Marx-Stadt District from Jan, 1963 to Jan, 1981. 
 Lothar Fichtner is the head of the government of Karl-Marx-Stadt District from Jan, 1981 to Jan, 1989.

Answer:
user
Albrecht Buttolo
assistant
Question:
Who was the head of Karl-Marx-Stadt District in Jan, 1990?

Context:
 Werner Felfe is the head of the government of Karl-Marx-Stadt District from Jan, 1960 to Jan, 1963. 
 Albrecht Buttolo is the head of the government of Karl-Marx-Stadt District from Jan, 1990 to Jan, 1990. 
 Heinz Arnold is the head of the government of Karl-Marx-Stadt District from Jan, 1963 to Jan, 1981. 
 Lothar Fichtner is the head of the government of Karl-Marx-Stadt District from Jan, 1981 to Jan, 1989.

Answer:
user
Lothar Fichtner
Heinz Arnold
Werner Felfe
assistant
Question:
Who was the head of Karl-Marx-Stadt District in Jan, 1990?

Context:
 Werner Felfe is the head of the government of Karl-Marx-Stadt District from Jan, 1960 to Jan, 1963. 
 Albrecht Buttolo is the head of the government of Karl-Marx-Stadt District from Jan, 1990 to Jan, 1990. 
 Heinz Arnold is the head of the government of Karl-Marx-Stadt District from Jan, 1963 to Jan, 1981. 
 Lothar Fichtner is the head of the government of Karl-Marx-Stadt District from Jan, 1981 to Jan, 1989.

Answer:
user
Albrecht Buttolo
assistant