Question: when is noise pollution added in pollution list
[{'answer': 'the 1970s', 'provenance': [{'wikipedia_id': '66599', 'title': 'Noise pollution', 'start_paragraph_id': 23, 'start_character': 9, 'end_paragraph_id': 23, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Legal status.\n'}]}, {'provenance': [{'wikipedia_id': '66599', 'title': 'Noise pollution', 'start_paragraph_id': 23, 'start_character': 0, 'end_paragraph_id': 23, 'end_character': 104, 'bleu_score': 0.8852140475440831, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11585143734145153745}, 'section': 'Section::::Legal status.\n'}]}]