Question: when did nigeria won under 17 world cup
[{'answer': '1985', 'provenance': [{'wikipedia_id': '13261284', 'title': 'Nigeria national under-17 football team', 'start_paragraph_id': 3, 'start_character': 58, 'end_paragraph_id': 3, 'end_character': 62, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'answer': '1993', 'provenance': [{'wikipedia_id': '13261284', 'title': 'Nigeria national under-17 football team', 'start_paragraph_id': 3, 'start_character': 168, 'end_paragraph_id': 3, 'end_character': 172, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'answer': '2007', 'provenance': [{'wikipedia_id': '13261284', 'title': 'Nigeria national under-17 football team', 'start_paragraph_id': 3, 'start_character': 174, 'end_paragraph_id': 3, 'end_character': 178, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'answer': '2013', 'provenance': [{'wikipedia_id': '13261284', 'title': 'Nigeria national under-17 football team', 'start_paragraph_id': 3, 'start_character': 180, 'end_paragraph_id': 3, 'end_character': 184, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'answer': '2015', 'provenance': [{'wikipedia_id': '13261284', 'title': 'Nigeria national under-17 football team', 'start_paragraph_id': 3, 'start_character': 190, 'end_paragraph_id': 3, 'end_character': 194, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]