Question: Harry Potter and the Deathly Hallows is the seventh and final novel of the "Harry Potter" series, the series ended that began in 1997 with the publication of which J. K. Rowling novel?
{'answer': "Harry Potter and the Philosopher's Stone", 'supporting_facts': [['Harry Potter and the Deathly Hallows', 1], ["Harry Potter and the Philosopher's Stone", 0]]}