Question: how many indian reservations are in the usa
[{'answer': '326', 'provenance': [{'wikipedia_id': '784889', 'title': 'Indian reservation', 'start_paragraph_id': 1, 'start_character': 266, 'end_paragraph_id': 1, 'end_character': 269, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '784889', 'title': 'Indian reservation', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 848, 'bleu_score': 0.8967193453144131, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5149490496236062256}, 'section': 'Section::::Abstract.'}]}]