Question: who is considered the greatest of the early chola kings
[{'answer': 'Karikala Chola', 'provenance': [{'wikipedia_id': '4530036', 'title': 'Early Cholas', 'start_paragraph_id': 5, 'start_character': 117, 'end_paragraph_id': 5, 'end_character': 131, 'bleu_score': 1.0, 'section': 'Section::::Sources.\n'}]}, {'provenance': [{'wikipedia_id': '4530036', 'title': 'Early Cholas', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 837, 'bleu_score': 0.9661808264736941, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2518839833375494244}, 'section': 'Section::::Cholas in Sangam literature.:Karikala Chola.\n'}]}]