Which book written by an Indian born Australian adopted author was the film "Lion" based on? 
Lion (2016 film): Lion is a 2016 biographical film directed by Garth Davis (in his feature debut) and written by Luke Davies, based on the non-fiction book "A Long Way Home" by Saroo Brierley with Larry Buttrose. Saroo Brierley:  He was adopted by an Australian couple and, 25 years later, reunited with his biological mother.
i don't know