Question: when did the indian warfare on the texas frontier end
[{'answer': '1875', 'provenance': [{'wikipedia_id': '13203649', 'title': 'Texas–Indian wars', 'start_paragraph_id': 2, 'start_character': 375, 'end_paragraph_id': 2, 'end_character': 379, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '13203649', 'title': 'Texas–Indian wars', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 538, 'bleu_score': 0.9030821421670621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5206574430357572692}, 'section': 'Section::::Abstract.'}]}]