Question: who is the president of wells fargo bank
[{'answer': 'Timothy J. Sloan', 'provenance': [{'wikipedia_id': '18714749', 'title': 'List of Wells Fargo presidents', 'start_paragraph_id': 42, 'start_character': 12, 'end_paragraph_id': 42, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::Presidents of Wells Fargo Bank.:Wells Fargo Bank.\n'}]}]