Question:
Who was the head of Security Information Service in Jan, 1998?

Context:
 Karel Vulterin is the head of the government of Security Information Service from Mar, 1997 to Jan, 1999. 
 Michal Koudelka is the head of the government of Security Information Service from Aug, 2016 to Dec, 2022. 
 Stanislav Devátý is the head of the government of Security Information Service from Jul, 1994 to Nov, 1996.

Answer:
Question:
Who was the head of Security Information Service in Jan, 1998?

Context:
 Karel Vulterin is the head of the government of Security Information Service from Mar, 1997 to Jan, 1999. 
 Michal Koudelka is the head of the government of Security Information Service from Aug, 2016 to Dec, 2022. 
 Stanislav Devátý is the head of the government of Security Information Service from Jul, 1994 to Nov, 1996.

Answer:
user
Karel Vulterin
assistant
Question:
Who was the head of Security Information Service in Jan, 1998?

Context:
 Karel Vulterin is the head of the government of Security Information Service from Mar, 1997 to Jan, 1999. 
 Michal Koudelka is the head of the government of Security Information Service from Aug, 2016 to Dec, 2022. 
 Stanislav Devátý is the head of the government of Security Information Service from Jul, 1994 to Nov, 1996.

Answer:
user
Michal Koudelka
Stanislav Devátý
assistant
Question:
Who was the head of Security Information Service in Jan, 1998?

Context:
 Karel Vulterin is the head of the government of Security Information Service from Mar, 1997 to Jan, 1999. 
 Michal Koudelka is the head of the government of Security Information Service from Aug, 2016 to Dec, 2022. 
 Stanislav Devátý is the head of the government of Security Information Service from Jul, 1994 to Nov, 1996.

Answer:
user
Karel Vulterin
assistant