Question: who won the battle of the bulge in world war 2
[{'answer': 'Allied', 'provenance': [{'wikipedia_id': '57998', 'title': 'Battle of the Bulge', 'start_paragraph_id': 1, 'start_character': 414, 'end_paragraph_id': 1, 'end_character': 420, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]