Question: where does the oxford tube leave from in london
[{'answer': 'Oxford', 'provenance': [{'wikipedia_id': '16280522', 'title': 'Oxford to London coach route', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 6, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '16280522', 'title': 'Oxford to London coach route', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 442, 'bleu_score': 0.940033794885305, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15418427835937936952}, 'section': 'Section::::Abstract.'}]}]