Question: who served as the general of confederate forces during the civil war
[{'answer': 'Robert E. Lee', 'provenance': [{'wikipedia_id': '293722', 'title': 'Confederate States Army', 'start_paragraph_id': 5, 'start_character': 73, 'end_paragraph_id': 5, 'end_character': 86, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]