Question: who invented the submarine during the civil war
[{'answer': 'Horace Lawson Hunley', 'provenance': [{'wikipedia_id': '62079', 'title': 'H. L. Hunley (submarine)', 'start_paragraph_id': 1, 'start_character': 561, 'end_paragraph_id': 1, 'end_character': 581, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '62079', 'title': 'H. L. Hunley (submarine)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 713, 'bleu_score': 0.973796594498297, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17545758902821236268}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1130753', 'title': 'Horace Lawson Hunley', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Horace Lawson Hunley (June 20, 1823 in Sumner County, Tennessee October 15, 1863 off Charleston, South Carolina) was a Confederate marine engineer during the American Civil War. He developed early hand-powered submarines,', 'He developed early hand-powered submarines']}}]}, {'provenance': [{'wikipedia_id': '11772891', 'title': 'Pioneer (submarine)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['While the United States Navy was constructing its first submarine, USS "Alligator", during the American Civil War in late 1861, the Confederates were doing so as well. Hunley, McClintock and Watson built "Pioneer" in New Orleans, Louisiana.', 'Pioneer was the first of three submarines privately developed and paid for by Horace Lawson Hunley', 'Pioneer was the first of three submarines privately developed and paid for by Horace Lawson Hunley,']}}]}]