Question: when did the us navy became the biggest
[{'answer': 'the 1920s', 'provenance': [{'wikipedia_id': '274942', 'title': 'History of the United States Navy', 'start_paragraph_id': 1, 'start_character': 365, 'end_paragraph_id': 1, 'end_character': 374, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '274942', 'title': 'History of the United States Navy', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 374, 'bleu_score': 0.8644504292823221, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17063230665643222107}, 'section': 'Section::::Abstract.'}]}]