Question: when did sweden stop driving on the left
[{'answer': '3 September 1967', 'provenance': [{'wikipedia_id': '652411', 'title': 'Dagen H', 'start_paragraph_id': 1, 'start_character': 117, 'end_paragraph_id': 1, 'end_character': 133, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '652411', 'title': 'Dagen H', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 307, 'bleu_score': 0.7794494986916021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2498588184643773984}, 'section': 'Section::::Abstract.'}]}]