Question: which countries form a part of north america
[{'answer': 'Central America', 'provenance': [{'wikipedia_id': '21139', 'title': 'North America', 'start_paragraph_id': 9, 'start_character': 259, 'end_paragraph_id': 9, 'end_character': 274, 'bleu_score': 1.0, 'section': 'Section::::Name.\n'}]}, {'answer': 'Caribbean', 'provenance': [{'wikipedia_id': '21139', 'title': 'North America', 'start_paragraph_id': 1, 'start_character': 366, 'end_paragraph_id': 1, 'end_character': 375, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21139', 'title': 'North America', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 380, 'bleu_score': 0.814278040502837, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5980539642042683398}, 'section': 'Section::::Extent.:Regions.\n'}]}]