Question: who was the first popularly elected president of texas
[{'answer': 'Sam Houston', 'provenance': [{'wikipedia_id': '809226', 'title': 'President of the Republic of Texas', 'start_paragraph_id': 4, 'start_character': 351, 'end_paragraph_id': 4, 'end_character': 362, 'bleu_score': 1.0, 'section': 'Section::::History and duties.\n'}]}, {'provenance': [{'wikipedia_id': '809226', 'title': 'President of the Republic of Texas', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 941, 'bleu_score': 0.9875383322810981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8359418217586347018}, 'section': 'Section::::History and duties.\n'}]}]