Question: Which head coach of these two teams--Alabama Crimson Tide and Oklahoma Sooners--had the longest time with their team during the 2013 football season?
{'answer': 'Bob Stoops', 'supporting_facts': [['2013 Alabama Crimson Tide football team', 0], ['2013 Alabama Crimson Tide football team', 2], ['2013 Oklahoma Sooners football team', 0], ['2013 Oklahoma Sooners football team', 1]]}