Question: how many episodes of gurren lagann are there
[{'answer': '27', 'provenance': [{'wikipedia_id': '11319098', 'title': 'List of Gurren Lagann episodes', 'start_paragraph_id': 2, 'start_character': 276, 'end_paragraph_id': 2, 'end_character': 278, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]