Question: how many times chennai super kings win in ipl
[{'answer': '91', 'provenance': [{'wikipedia_id': '15829930', 'title': 'Chennai Super Kings', 'start_paragraph_id': 4, 'start_character': 307, 'end_paragraph_id': 4, 'end_character': 309, 'bleu_score': 1.0, 'section': 'Section::::Franchise history.\n'}]}]