Question: what country lies to the south of canada
[{'answer': 'the United States', 'provenance': [{'wikipedia_id': '5042916', 'title': 'Canada', 'start_paragraph_id': 1, 'start_character': 276, 'end_paragraph_id': 1, 'end_character': 293, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]