Question:
Which political party did Petr Mach belong to in May, 2001?

Context:
 Petr Mach is a member of the Party of Free Citizens from Jan, 2009 to Jan, 2019. 
 Petr Mach is a member of the Civic Democratic Party from Jan, 1997 to Jan, 2008. 
 Petr Mach is a member of the Tricolour Citizens' Movement from Jan, 2019 to Dec, 2022.

Answer:
Question:
Which political party did Petr Mach belong to in May, 2001?

Context:
 Petr Mach is a member of the Party of Free Citizens from Jan, 2009 to Jan, 2019. 
 Petr Mach is a member of the Civic Democratic Party from Jan, 1997 to Jan, 2008. 
 Petr Mach is a member of the Tricolour Citizens' Movement from Jan, 2019 to Dec, 2022.

Answer:
user
Civic Democratic Party
assistant
Question:
Which political party did Petr Mach belong to in May, 2001?

Context:
 Petr Mach is a member of the Party of Free Citizens from Jan, 2009 to Jan, 2019. 
 Petr Mach is a member of the Civic Democratic Party from Jan, 1997 to Jan, 2008. 
 Petr Mach is a member of the Tricolour Citizens' Movement from Jan, 2019 to Dec, 2022.

Answer:
user
Party of Free Citizens
Tricolour Citizens' Movement
assistant
Question:
Which political party did Petr Mach belong to in May, 2001?

Context:
 Petr Mach is a member of the Party of Free Citizens from Jan, 2009 to Jan, 2019. 
 Petr Mach is a member of the Civic Democratic Party from Jan, 1997 to Jan, 2008. 
 Petr Mach is a member of the Tricolour Citizens' Movement from Jan, 2019 to Dec, 2022.

Answer:
user
Civic Democratic Party
assistant