Use "curtain raiser" in a sentence

1. The BIMSTEC Summit’s curtain-raiser programme this evening is very important from West Bengal’s perspective.

2. It gives me great pleasure to participate in this Curtain Raiser event to BIMSTEC Summit 2008.

3. The operations against the Palaus, however, turned out to be only a curtain-raiser for the show to come — the recapture of the Philippines.