Question: when was the first submarine used in war
[{'answer': '1776', 'provenance': [{'wikipedia_id': '4551386', 'title': 'History of submarines', 'start_paragraph_id': 18, 'start_character': 54, 'end_paragraph_id': 18, 'end_character': 58, 'bleu_score': 1.0, 'section': 'Section::::Technology.:Early military submarines.\n'}]}, {'answer': 'During the American Revolutionary War', 'provenance': [{'wikipedia_id': '4551386', 'title': 'History of submarines', 'start_paragraph_id': 89, 'start_character': 51, 'end_paragraph_id': 89, 'end_character': 88, 'bleu_score': 1.0, 'section': 'Section::::Military.\n'}]}, {'provenance': [{'wikipedia_id': '4551386', 'title': 'History of submarines', 'start_paragraph_id': 89, 'start_character': 0, 'end_paragraph_id': 89, 'end_character': 322, 'bleu_score': 0.9632870032952191, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5198117670352006701}, 'section': 'Section::::Military.\n'}]}]