Question: The type of the novel the 2012 American coming-of-age drama film The Perks of Being a Wallflower is based on is a novel written in what form?
{'answer': 'a series of documents', 'supporting_facts': [['The Perks of Being a Wallflower (film)', 0], ['The Perks of Being a Wallflower (film)', 1], ['Epistolary novel', 0]]}