Question: who won the battle of shiloh during the civil war
[{'answer': 'Union victory', 'provenance': [{'wikipedia_id': '144155', 'title': 'Battle of Shiloh', 'start_paragraph_id': 80, 'start_character': 402, 'end_paragraph_id': 80, 'end_character': 415, 'bleu_score': 1.0, 'section': 'Section::::Aftermath.:Reactions and effects.\n'}]}]