Question: who had the most powerful navy in ww2
[{'answer': 'Royal Navy', 'provenance': [{'wikipedia_id': '32802349', 'title': 'Naval history of World War II', 'start_paragraph_id': 3, 'start_character': 37, 'end_paragraph_id': 3, 'end_character': 47, 'bleu_score': 1.0, 'section': 'Section::::Main navies.:Before and after the war.\n'}]}, {'answer': 'United States Navy', 'provenance': [{'wikipedia_id': '32802349', 'title': 'Naval history of World War II', 'start_paragraph_id': 3, 'start_character': 319, 'end_paragraph_id': 3, 'end_character': 337, 'bleu_score': 1.0, 'section': 'Section::::Main navies.:Before and after the war.\n'}]}, {'provenance': [{'wikipedia_id': '32802349', 'title': 'Naval history of World War II', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 504, 'bleu_score': 0.978606533029418, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6386580472041068203}, 'section': 'Section::::Main navies.:Before and after the war.\n'}]}]