Question: how many episodes of the looming tower are there
[{'answer': '10', 'provenance': [{'wikipedia_id': '56082481', 'title': 'The Looming Tower (miniseries)', 'start_paragraph_id': 90, 'start_character': 195, 'end_paragraph_id': 90, 'end_character': 197, 'bleu_score': 1.0, 'section': 'Section::::Reception.:Critical response.\n'}]}]