Question: where does the north begin in the us
[{'answer': 'The Mason -- Dixon line'}, {'provenance': [{'wikipedia_id': '82334', 'title': 'Mason–Dixon line', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 647, 'bleu_score': 0.856251592614769, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15903395538231611261}, 'section': 'Section::::Abstract.'}]}]