Question: how many times has nigeria won the fifa u17 world cup
[{'answer': 'five', 'provenance': [{'wikipedia_id': '13261284', 'title': 'Nigeria national under-17 football team', 'start_paragraph_id': 3, 'start_character': 324, 'end_paragraph_id': 3, 'end_character': 328, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '13261284', 'title': 'Nigeria national under-17 football team', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 429, 'bleu_score': 0.9321992460304711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13322685647849845891}, 'section': 'Section::::History.\n'}]}]