Conversation so far:
What year was Pim Fortuyn assassinated?
2002
Who assassinated Pim Fortuyn?
Volkert van derr Graaf assassinated Pim Fortyun.
Why was Pim Fortuyn assassinated by Volkert van derr Graaf?
Volkert van der Graaf said he murdered Pim Fortuyn to stop him from exploiting Muslims as scapegoats and targeting the weak members of society in seeking political power.
Where was Pim Fortuyn assassinated?
Pim Fortuyn was assassinated by gunshot in Hilversum, North Holland.

Question: Who was the interview with?
Self-contained rewrite: Who was interviewing Pim Fortuyn when he was assassinated?