Question: what countries from the southern boundary of kazakhstan
[{'answer': 'Turkmenistan', 'provenance': [{'wikipedia_id': '16644', 'title': 'Geography of Kazakhstan', 'start_paragraph_id': 1, 'start_character': 248, 'end_paragraph_id': 1, 'end_character': 260, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Uzbekistan', 'provenance': [{'wikipedia_id': '16644', 'title': 'Geography of Kazakhstan', 'start_paragraph_id': 1, 'start_character': 262, 'end_paragraph_id': 1, 'end_character': 272, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Kyrgyzstan', 'provenance': [{'wikipedia_id': '16644', 'title': 'Geography of Kazakhstan', 'start_paragraph_id': 1, 'start_character': 278, 'end_paragraph_id': 1, 'end_character': 288, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '16644', 'title': 'Geography of Kazakhstan', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 420, 'bleu_score': 0.6409616144212891, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17089620335820504467}, 'section': 'Section::::Abstract.'}]}]