What is the fine-grained topic of the following text: And if for no other reason than to guarantee a boffo opening weekend in India, lovely Bollywood icon Aishwarya Rai Bachchan comes along for the ride playing an expert on The Tornado, even though the film gives her nothing funny to say or interesting to do. Only return the topic.
Aishwarya Rai Bachchan's role in a film about The Tornado.