Question: who was involved in the battle of dunkirk
[{'answer': 'United Kingdom', 'provenance': [{'wikipedia_id': '73246', 'title': 'Battle of Dunkirk', 'start_paragraph_id': 6, 'start_character': 63, 'end_paragraph_id': 6, 'end_character': 77, 'bleu_score': 1.0, 'section': 'Section::::Prelude.\n'}]}, {'answer': 'British India'}, {'answer': 'France', 'provenance': [{'wikipedia_id': '73246', 'title': 'Battle of Dunkirk', 'start_paragraph_id': 1, 'start_character': 60, 'end_paragraph_id': 1, 'end_character': 66, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Morocco'}, {'answer': 'Poland'}, {'answer': 'Belgium', 'provenance': [{'wikipedia_id': '73246', 'title': 'Battle of Dunkirk', 'start_paragraph_id': 2, 'start_character': 264, 'end_paragraph_id': 2, 'end_character': 271, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Canada', 'provenance': [{'wikipedia_id': '73246', 'title': 'Battle of Dunkirk', 'start_paragraph_id': 77, 'start_character': 71, 'end_paragraph_id': 77, 'end_character': 77, 'bleu_score': 1.0, 'section': 'Section::::References.:Bibliography.\n'}]}, {'answer': 'Netherlands', 'provenance': [{'wikipedia_id': '73246', 'title': 'Battle of Dunkirk', 'start_paragraph_id': 2, 'start_character': 125, 'end_paragraph_id': 2, 'end_character': 136, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Germany', 'provenance': [{'wikipedia_id': '73246', 'title': 'Battle of Dunkirk', 'start_paragraph_id': 1, 'start_character': 125, 'end_paragraph_id': 1, 'end_character': 132, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]