Question: what level does the air quality index have to be above to be considered hazardous
[{'answer': 'over 300', 'provenance': [{'wikipedia_id': '1942366', 'title': 'Air quality index', 'start_paragraph_id': 49, 'start_character': 228, 'end_paragraph_id': 49, 'end_character': 236, 'bleu_score': 1.0, 'section': 'Section::::Indices by location.:United States.\n'}]}, {'provenance': [{'wikipedia_id': '1942366', 'title': 'Air quality index', 'start_paragraph_id': 49, 'start_character': 0, 'end_paragraph_id': 49, 'end_character': 306, 'bleu_score': 0.9603762111511761, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10621235322305413944}, 'section': 'Section::::Indices by location.:United States.\n'}]}]