Question: when did the smoking ban come into effect
[{'answer': '1995', 'provenance': [{'wikipedia_id': '5718985', 'title': 'List of smoking bans in the United States', 'start_paragraph_id': 3, 'start_character': 3, 'end_paragraph_id': 3, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5718985', 'title': 'List of smoking bans in the United States', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 316, 'bleu_score': 0.7496763287404651, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13268100822823914394}, 'section': 'Section::::Abstract.'}]}]