Question: what is the db of a train horn
[{'answer': 'min 101', 'provenance': [{'wikipedia_id': '9330997', 'title': 'Train horn', 'start_paragraph_id': 110, 'start_character': 211, 'end_paragraph_id': 110, 'end_character': 218, 'bleu_score': 1.0, 'section': 'Section::::Operation.:United Kingdom.\n'}]}, {'answer': 'max 106', 'provenance': [{'wikipedia_id': '9330997', 'title': 'Train horn', 'start_paragraph_id': 110, 'start_character': 226, 'end_paragraph_id': 110, 'end_character': 233, 'bleu_score': 1.0, 'section': 'Section::::Operation.:United Kingdom.\n'}]}]