Question: who was the mexican commander who surrendered to the texans at the capturing of san antonio
[{'answer': 'Sanchez Navarro', 'provenance': [{'wikipedia_id': '2812172', 'title': 'Siege of Béxar', 'start_paragraph_id': 34, 'start_character': 715, 'end_paragraph_id': 34, 'end_character': 730, 'bleu_score': 1.0, 'section': 'Section::::Battle.:Surrender.\n'}]}, {'provenance': [{'wikipedia_id': '2812172', 'title': 'Siege of Béxar', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9767553108904552088}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2812172', 'title': 'Siege of Béxar', 'start_paragraph_id': 36, 'start_character': 0, 'end_paragraph_id': 36, 'end_character': 588, 'bleu_score': 0.9796927878356411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9767553108904552088}, 'section': 'Section::::Battle.:Surrender.\n'}]}, {'provenance': [{'wikipedia_id': '2812172', 'title': 'Siege of Béxar', 'section': 'Section::::Battle.:Surrender.\n', 'start_paragraph_id': 34, 'end_paragraph_id': 34, 'meta': {'evidence_span': ['Colonel Nicolas Condell, his small force of 50\xa0men from the Morelos and Tamaulipas units, and two cannon remained as the rear guard at the plaza. Years later, however, Sanchez Navarro maintained that Cos was not planning to abandon the town but wished to move the wounded to the relative safety of the Alamo.', 'Years later, however, Sanchez Navarro maintained that Cos was not planning to abandon the town but wished to move the wounded to the relative safety of the Alamo.', 'Sanchez Navarro']}}]}]