Question:
Which political party did Obren Joksimović belong to in Aug, 1990?

Context:
 Obren Joksimović is a member of the Serbian Radical Party from Jan, 2008 to Dec, 2022. 
 Obren Joksimović is a member of the Serbian Renewal Movement from Jan, 1990 to Jan, 1995. 
 Obren Joksimović is a member of the Democratic Party of Serbia from Jan, 1995 to Jan, 2006.

Answer:
Serbian Renewal Movement