Question: who won the battle of pea ridge in the civil war
[{'answer': 'Union', 'provenance': [{'wikipedia_id': '299387', 'title': 'Battle of Pea Ridge', 'start_paragraph_id': 2, 'start_character': 139, 'end_paragraph_id': 2, 'end_character': 144, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '299387', 'title': 'Battle of Pea Ridge', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 568, 'bleu_score': 0.5474679229520221, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12027229384302094440}, 'section': 'Section::::Abstract.'}]}]