Question: who said a nation divided cannot stand
[{'answer': 'Abraham Lincoln', 'provenance': [{'wikipedia_id': '2546031', 'title': "Lincoln's House Divided Speech", 'start_paragraph_id': 1, 'start_character': 49, 'end_paragraph_id': 1, 'end_character': 64, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2546031', 'title': "Lincoln's House Divided Speech", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 451, 'bleu_score': 0.9738505480425671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13732014528004593715}, 'section': 'Section::::Abstract.'}]}]