Question: which mountain range is found along the east coast of mexico
[{'answer': 'Sierra Madre Oriental', 'provenance': [{'wikipedia_id': '56695', 'title': 'Geography of Mexico', 'start_paragraph_id': 7, 'start_character': 4, 'end_paragraph_id': 7, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Physical features.\n'}]}, {'provenance': [{'wikipedia_id': '56695', 'title': 'Geography of Mexico', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 600, 'bleu_score': 0.809282470614272, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6340217887578735425}, 'section': 'Section::::Physical features.\n'}]}]