Conversation so far:
Where was Sandara Park born?
Sandara Park was born in Busan, South Korea.
Who were Sandara Park's parents?
Sandara Park's Father is Kyung Ran-Kim and her Mother is Ik-Su Park.
who is Sandara Park's Mother?
Sandara Park's mother is Ik-Su Park.
Did Sandara Park have siblings?
Sandara Park has two siblings. Thunder, who is a former member of K-pop boy group MBLAQ, and a younger sister named Durami.

Question: who is Sandara Park's other sibling?
Self-contained rewrite: who is Sandara Park's other sibling besides Thunder and Durami?