Question: who is better at football ghana or nigeria
[{'answer': 'Ghana', 'provenance': [{'wikipedia_id': '52248347', 'title': 'Ghana–Nigeria football rivalry', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 5, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]