Question: who is the oldest bank in the world
[{'answer': 'Monte dei Paschi di Siena', 'provenance': [{'wikipedia_id': '36700040', 'title': 'List of oldest banks in continuous operation', 'start_paragraph_id': 2, 'start_character': 69, 'end_paragraph_id': 2, 'end_character': 94, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]