Question: how many characters are there in guess who
[{'answer': '24', 'provenance': [{'wikipedia_id': '917014', 'title': 'Guess Who?', 'start_paragraph_id': 3, 'start_character': 72, 'end_paragraph_id': 3, 'end_character': 74, 'bleu_score': 1.0, 'section': 'Section::::Gameplay.\n'}]}, {'provenance': [{'wikipedia_id': '917014', 'title': 'Guess Who?', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 664, 'bleu_score': 0.867531622785458, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9137012480927327624}, 'section': 'Section::::Gameplay.\n'}]}]