Question: Alexander Rossi, the American professional racing driver, came in 3rd place in which pair of motor races in April 2015?
{'answer': 'The 2015 Bahrain GP2 Series round', 'supporting_facts': [['2015 Bahrain GP2 Series round', 0], ['2015 Bahrain GP2 Series round', 3], ['Alexander Rossi', 0]]}