Question: who wrote four score and seven years ago
[{'answer': 'Lincoln', 'provenance': [{'wikipedia_id': '12384', 'title': 'Gettysburg Address', 'start_paragraph_id': 1, 'start_character': 63, 'end_paragraph_id': 1, 'end_character': 70, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]