Question: what general led the confederate army into pennsylvania
[{'answer': 'Robert E. Lee', 'provenance': [{'wikipedia_id': '1513953', 'title': 'Gettysburg Campaign', 'start_paragraph_id': 1, 'start_character': 107, 'end_paragraph_id': 1, 'end_character': 120, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1513953', 'title': 'Gettysburg Campaign', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 795, 'bleu_score': 0.9411026953261951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13810158049310693143}, 'section': 'Section::::Abstract.'}]}]