Question: montreal protocol aimed to reduce emissions that cause this
[{'answer': 'ozone depletion', 'provenance': [{'wikipedia_id': '19856', 'title': 'Montreal Protocol', 'start_paragraph_id': 1, 'start_character': 282, 'end_paragraph_id': 1, 'end_character': 297, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19856', 'title': 'Montreal Protocol', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1547, 'bleu_score': 0.908334277072631, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6596275930261840207}, 'section': 'Section::::Abstract.'}]}]