In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

Context: is an Indian actress who has won several awards and nominations. She made her film debut with a supporting role in the Bengali film Biyer Phool (1996) Link Information: Rani Mukerji (; born 21 March 1978) Question: How old was Rani when she made her film debut?
Answer: 18