Question: who took part in the battle of the bulge
[{'answer': 'United States', 'provenance': [{'wikipedia_id': '57998', 'title': 'Battle of the Bulge', 'start_paragraph_id': 3, 'start_character': 679, 'end_paragraph_id': 3, 'end_character': 692, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'United Kingdom', 'provenance': [{'wikipedia_id': '57998', 'title': 'Battle of the Bulge', 'start_paragraph_id': 16, 'start_character': 492, 'end_paragraph_id': 16, 'end_character': 506, 'bleu_score': 1.0, 'section': 'Section::::Background.:German plans.\n'}]}, {'answer': 'France', 'provenance': [{'wikipedia_id': '57998', 'title': 'Battle of the Bulge', 'start_paragraph_id': 1, 'start_character': 317, 'end_paragraph_id': 1, 'end_character': 323, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Canada'}, {'answer': 'Belgium', 'provenance': [{'wikipedia_id': '57998', 'title': 'Battle of the Bulge', 'start_paragraph_id': 1, 'start_character': 298, 'end_paragraph_id': 1, 'end_character': 305, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Luxembourg', 'provenance': [{'wikipedia_id': '57998', 'title': 'Battle of the Bulge', 'start_paragraph_id': 1, 'start_character': 329, 'end_paragraph_id': 1, 'end_character': 339, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Germany', 'provenance': [{'wikipedia_id': '57998', 'title': 'Battle of the Bulge', 'start_paragraph_id': 2, 'start_character': 372, 'end_paragraph_id': 2, 'end_character': 379, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]