Question:
Which political party did Rosemarie Hein belong to in Oct, 2004?

Context:
 Rosemarie Hein is a member of the The Left Party.PDS from Feb, 1990 to Jun, 2007. 
 Rosemarie Hein is a member of the Socialist Unity Party of Germany from Jan, 1976 to Feb, 1990. 
 Rosemarie Hein is a member of the The Left from Jun, 2007 to Dec, 2022.

Answer:
The Left Party.PDS