Question: what are the two largest countries in north america
[{'answer': 'Canada', 'provenance': [{'wikipedia_id': '21139', 'title': 'North America', 'start_paragraph_id': 12, 'start_character': 221, 'end_paragraph_id': 12, 'end_character': 227, 'bleu_score': 1.0, 'section': 'Section::::Extent.\n'}]}, {'answer': 'the United States', 'provenance': [{'wikipedia_id': '21139', 'title': 'North America', 'start_paragraph_id': 12, 'start_character': 229, 'end_paragraph_id': 12, 'end_character': 246, 'bleu_score': 1.0, 'section': 'Section::::Extent.\n'}]}, {'provenance': [{'wikipedia_id': '21139', 'title': 'North America', 'start_paragraph_id': 19, 'start_character': 0, 'end_paragraph_id': 19, 'end_character': 807, 'bleu_score': 0.8525715618466191, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1686683620988978576}, 'section': 'Section::::Extent.:Regions.\n'}]}]