Question: when did the smoking ban in public places start
[{'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.'}]}, {'answer': 'August 2 , 1990', 'provenance': [{'wikipedia_id': '5718985', 'title': 'List of smoking bans in the United States', 'start_paragraph_id': 127, 'start_character': 27, 'end_paragraph_id': 127, 'end_character': 43, 'bleu_score': 1.0, 'section': 'Section::::Smoking laws of the United States by state or territory.:California.\n'}]}, {'provenance': [{'wikipedia_id': '5718985', 'title': 'List of smoking bans in the United States', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17351228003865927236}, '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': 17351228003865927236}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5718985', 'title': 'List of smoking bans in the United States', 'start_paragraph_id': 127, 'start_character': 0, 'end_paragraph_id': 127, 'end_character': 446, 'bleu_score': 0.9712154609069981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17351228003865927236}, 'section': 'Section::::Smoking laws of the United States by state or territory.:California.\n'}]}, {'provenance': [{'wikipedia_id': '5718985', 'title': 'List of smoking bans in the United States', 'section': 'Section::::Smoking laws of the United States by state or territory.:California.\n', 'start_paragraph_id': 127, 'end_paragraph_id': 127, 'meta': {'evidence_span': ["BULLET::::- San Luis Obispo, August 2, 1990, became the first city in the world to ban smoking in all public buildings. On January 15, 2010, the City's municipal code amendment included city parks and outdoor recreational", "San Luis Obispo, August 2, 1990, became the first city in the world to ban smoking in all public buildings. On January 15, 2010, the City's municipal code amendment included city parks and outdoor recreational facilities as smoke-free areas. In April 2010, City Council adopted an ordinance that bans smoking in all areas frequented by the public, with limited exceptions, including unenclosed areas at certain drinking establishments", 'San Luis Obispo, August 2, 1990, became the first city in the world to ban smoking in all public buildings.']}}]}]