Question:
Which political party did Cristovam Buarque belong to in Feb, 1990?

Context:
 Cristovam Buarque is a member of the Democratic Labour Party from Jan, 2005 to Jan, 2016. 
 Cristovam Buarque is a member of the Workers' Party from Jan, 1990 to Jan, 2005. 
 Cristovam Buarque is a member of the Cidadania from Jan, 2016 to Dec, 2022.

Answer:
Question:
Which political party did Cristovam Buarque belong to in Feb, 1990?

Context:
 Cristovam Buarque is a member of the Democratic Labour Party from Jan, 2005 to Jan, 2016. 
 Cristovam Buarque is a member of the Workers' Party from Jan, 1990 to Jan, 2005. 
 Cristovam Buarque is a member of the Cidadania from Jan, 2016 to Dec, 2022.

Answer:
user
Workers' Party
assistant
Question:
Which political party did Cristovam Buarque belong to in Feb, 1990?

Context:
 Cristovam Buarque is a member of the Democratic Labour Party from Jan, 2005 to Jan, 2016. 
 Cristovam Buarque is a member of the Workers' Party from Jan, 1990 to Jan, 2005. 
 Cristovam Buarque is a member of the Cidadania from Jan, 2016 to Dec, 2022.

Answer:
user
Cidadania
Democratic Labour Party
assistant
Question:
Which political party did Cristovam Buarque belong to in Feb, 1990?

Context:
 Cristovam Buarque is a member of the Democratic Labour Party from Jan, 2005 to Jan, 2016. 
 Cristovam Buarque is a member of the Workers' Party from Jan, 1990 to Jan, 2005. 
 Cristovam Buarque is a member of the Cidadania from Jan, 2016 to Dec, 2022.

Answer:
user
Workers' Party
assistant