Question: who knew the art of exiting the chakravyuh battle formation in mahabharat
[{'answer': 'Abhimanyu', 'provenance': [{'wikipedia_id': '4258103', 'title': 'Padmavyuha', 'start_paragraph_id': 6, 'start_character': 11, 'end_paragraph_id': 6, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Background.\n'}]}, {'answer': 'Arjuna', 'provenance': [{'wikipedia_id': '4258103', 'title': 'Padmavyuha', 'start_paragraph_id': 7, 'start_character': 184, 'end_paragraph_id': 7, 'end_character': 190, 'bleu_score': 1.0, 'section': 'Section::::Abhimanyu and the Chakravyūha.\n'}]}, {'answer': 'Krishna', 'provenance': [{'wikipedia_id': '4258103', 'title': 'Padmavyuha', 'start_paragraph_id': 7, 'start_character': 192, 'end_paragraph_id': 7, 'end_character': 199, 'bleu_score': 1.0, 'section': 'Section::::Abhimanyu and the Chakravyūha.\n'}]}, {'answer': 'Pradyumna', 'provenance': [{'wikipedia_id': '4258103', 'title': 'Padmavyuha', 'start_paragraph_id': 7, 'start_character': 204, 'end_paragraph_id': 7, 'end_character': 213, 'bleu_score': 1.0, 'section': 'Section::::Abhimanyu and the Chakravyūha.\n'}]}, {'provenance': [{'wikipedia_id': '4258103', 'title': 'Padmavyuha', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 685, 'bleu_score': 0.9594798946546471, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17778711112450637918}, 'section': 'Section::::Abhimanyu and the Chakravyūha.\n'}]}]