Question: what five countries border on the caspian sea
[{'answer': 'Kazakhstan', 'provenance': [{'wikipedia_id': '19653787', 'title': 'Caspian Sea', 'start_paragraph_id': 1, 'start_character': 568, 'end_paragraph_id': 1, 'end_character': 578, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Russia', 'provenance': [{'wikipedia_id': '19653787', 'title': 'Caspian Sea', 'start_paragraph_id': 1, 'start_character': 597, 'end_paragraph_id': 1, 'end_character': 603, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Azerbaijan', 'provenance': [{'wikipedia_id': '19653787', 'title': 'Caspian Sea', 'start_paragraph_id': 1, 'start_character': 622, 'end_paragraph_id': 1, 'end_character': 632, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Iran', 'provenance': [{'wikipedia_id': '19653787', 'title': 'Caspian Sea', 'start_paragraph_id': 1, 'start_character': 646, 'end_paragraph_id': 1, 'end_character': 650, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Turkmenistan', 'provenance': [{'wikipedia_id': '19653787', 'title': 'Caspian Sea', 'start_paragraph_id': 1, 'start_character': 669, 'end_paragraph_id': 1, 'end_character': 681, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19653787', 'title': 'Caspian Sea', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 332, 'bleu_score': 0.511136940103056, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1724518017250662380}, 'section': 'Section::::Abstract.'}]}]