Question: when did the us have a standing army
[{'answer': 'June 1784', 'provenance': [{'wikipedia_id': '21001269', 'title': 'History of the United States Army', 'start_paragraph_id': 2, 'start_character': 370, 'end_paragraph_id': 2, 'end_character': 379, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21001269', 'title': 'History of the United States Army', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 684, 'bleu_score': 0.981898582188057, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 178607700237396435}, 'section': 'Section::::Abstract.'}]}]