Question: where is the tundra located in north america
[{'answer': 'Alaska', 'provenance': [{'wikipedia_id': '30684', 'title': 'Tundra', 'start_paragraph_id': 7, 'start_character': 669, 'end_paragraph_id': 7, 'end_character': 675, 'bleu_score': 1.0, 'section': 'Section::::Arctic.\n'}]}, {'answer': 'Canada', 'provenance': [{'wikipedia_id': '30684', 'title': 'Tundra', 'start_paragraph_id': 4, 'start_character': 347, 'end_paragraph_id': 4, 'end_character': 353, 'bleu_score': 1.0, 'section': 'Section::::Arctic.\n'}]}, {'provenance': [{'wikipedia_id': '30684', 'title': 'Tundra', 'start_paragraph_id': 24, 'start_character': 0, 'end_paragraph_id': 24, 'end_character': 890, 'bleu_score': 0.8469141636131401, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2781762252700674331}, 'section': 'Section::::Climatic classification.\n'}]}]