Question: which three nations participated in the d-day operations in normandy
[{'answer': 'the Americans', 'provenance': [{'wikipedia_id': '6723726', 'title': 'Operation Overlord', 'start_paragraph_id': 2, 'start_character': 465, 'end_paragraph_id': 2, 'end_character': 478, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'the British', 'provenance': [{'wikipedia_id': '6723726', 'title': 'Operation Overlord', 'start_paragraph_id': 2, 'start_character': 533, 'end_paragraph_id': 2, 'end_character': 544, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'the Canadians', 'provenance': [{'wikipedia_id': '6723726', 'title': 'Operation Overlord', 'start_paragraph_id': 2, 'start_character': 568, 'end_paragraph_id': 2, 'end_character': 581, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6723726', 'title': 'Operation Overlord', 'start_paragraph_id': 2, 'start_character': 34, 'end_paragraph_id': 2, 'end_character': 1224, 'bleu_score': 0.926127017439278, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7810785252350050988}, 'section': 'Section::::Abstract.'}]}]