Question:
Who was the chair of European Central Bank in May, 2000?

Context:
 Wim Duisenberg is the chair of European Central Bank from Jun, 1998 to Nov, 2003. 
 Mario Draghi is the chair of European Central Bank from Nov, 2011 to Oct, 2019. 
 Christine Lagarde is the chair of European Central Bank from Oct, 2019 to Dec, 2022. 
 Jean-Claude Trichet is the chair of European Central Bank from Nov, 2003 to Oct, 2011.

Answer:
Question:
Who was the chair of European Central Bank in May, 2000?

Context:
 Wim Duisenberg is the chair of European Central Bank from Jun, 1998 to Nov, 2003. 
 Mario Draghi is the chair of European Central Bank from Nov, 2011 to Oct, 2019. 
 Christine Lagarde is the chair of European Central Bank from Oct, 2019 to Dec, 2022. 
 Jean-Claude Trichet is the chair of European Central Bank from Nov, 2003 to Oct, 2011.

Answer:
user
Wim Duisenberg
assistant
Question:
Who was the chair of European Central Bank in May, 2000?

Context:
 Wim Duisenberg is the chair of European Central Bank from Jun, 1998 to Nov, 2003. 
 Mario Draghi is the chair of European Central Bank from Nov, 2011 to Oct, 2019. 
 Christine Lagarde is the chair of European Central Bank from Oct, 2019 to Dec, 2022. 
 Jean-Claude Trichet is the chair of European Central Bank from Nov, 2003 to Oct, 2011.

Answer:
user
Mario Draghi
Jean-Claude Trichet
Christine Lagarde
assistant
Question:
Who was the chair of European Central Bank in May, 2000?

Context:
 Wim Duisenberg is the chair of European Central Bank from Jun, 1998 to Nov, 2003. 
 Mario Draghi is the chair of European Central Bank from Nov, 2011 to Oct, 2019. 
 Christine Lagarde is the chair of European Central Bank from Oct, 2019 to Dec, 2022. 
 Jean-Claude Trichet is the chair of European Central Bank from Nov, 2003 to Oct, 2011.

Answer:
user
Wim Duisenberg
assistant