Question: Callum Smith, is a British professional boxer, who competes in the super-middleweight division, and held the European, the British, and the WBC Silver titles between 2015 and 2017, he's the youngest of the Smith brothers, Stephen Francis Smith, is a British professional boxer, born on which date?
{'answer': '22 July 1984', 'supporting_facts': [['Callum Smith', 1], ['Stephen Smith (boxer)', 0]]}