Question: how many cherokees were on the trail of tears
[{'answer': '16,543', 'provenance': [{'wikipedia_id': '71973', 'title': 'Trail of Tears', 'start_paragraph_id': 2, 'start_character': 600, 'end_paragraph_id': 2, 'end_character': 606, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '71973', 'title': 'Trail of Tears', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 648, 'bleu_score': 0.8965524364234051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16353228100173724677}, 'section': 'Section::::Abstract.'}]}]