Question:
Which political party did Francisco Sosa Wagner belong to in Dec, 2008?

Context:
 Francisco Sosa Wagner is a member of the Union, Progress and Democracy from Jan, 2008 to Jan, 2014. 
 Francisco Sosa Wagner is a member of the Spanish Socialist Workers' Party from Jan, 1978 to Jan, 1990. 
 Francisco Sosa Wagner is a member of the Ciudadanos from Jan, 2015 to Dec, 2022.

Answer:
Question:
Which political party did Francisco Sosa Wagner belong to in Dec, 2008?

Context:
 Francisco Sosa Wagner is a member of the Union, Progress and Democracy from Jan, 2008 to Jan, 2014. 
 Francisco Sosa Wagner is a member of the Spanish Socialist Workers' Party from Jan, 1978 to Jan, 1990. 
 Francisco Sosa Wagner is a member of the Ciudadanos from Jan, 2015 to Dec, 2022.

Answer:
user
Union, Progress and Democracy
assistant
Question:
Which political party did Francisco Sosa Wagner belong to in Dec, 2008?

Context:
 Francisco Sosa Wagner is a member of the Union, Progress and Democracy from Jan, 2008 to Jan, 2014. 
 Francisco Sosa Wagner is a member of the Spanish Socialist Workers' Party from Jan, 1978 to Jan, 1990. 
 Francisco Sosa Wagner is a member of the Ciudadanos from Jan, 2015 to Dec, 2022.

Answer:
user
Spanish Socialist Workers' Party
Ciudadanos
assistant
Question:
Which political party did Francisco Sosa Wagner belong to in Dec, 2008?

Context:
 Francisco Sosa Wagner is a member of the Union, Progress and Democracy from Jan, 2008 to Jan, 2014. 
 Francisco Sosa Wagner is a member of the Spanish Socialist Workers' Party from Jan, 1978 to Jan, 1990. 
 Francisco Sosa Wagner is a member of the Ciudadanos from Jan, 2015 to Dec, 2022.

Answer:
user
Union, Progress and Democracy
assistant