Question: what pair of countries is located on the altiplano of south america
[{'answer': 'Bolivia', 'provenance': [{'wikipedia_id': '723100', 'title': 'Altiplano', 'start_paragraph_id': 1, 'start_character': 127, 'end_paragraph_id': 1, 'end_character': 134, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Peru', 'provenance': [{'wikipedia_id': '723100', 'title': 'Altiplano', 'start_paragraph_id': 1, 'start_character': 363, 'end_paragraph_id': 1, 'end_character': 367, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Chile', 'provenance': [{'wikipedia_id': '723100', 'title': 'Altiplano', 'start_paragraph_id': 1, 'start_character': 399, 'end_paragraph_id': 1, 'end_character': 404, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Argentina', 'provenance': [{'wikipedia_id': '723100', 'title': 'Altiplano', 'start_paragraph_id': 1, 'start_character': 409, 'end_paragraph_id': 1, 'end_character': 418, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '723100', 'title': 'Altiplano', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 418, 'bleu_score': 0.972407137066537, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3157365892654573478}, 'section': 'Section::::Abstract.'}]}]