Question: when did the first state secede from the union
[{'answer': 'December 20 , 1860', 'provenance': [{'wikipedia_id': '17832214', 'title': 'Secession in the United States', 'start_paragraph_id': 55, 'start_character': 111, 'end_paragraph_id': 55, 'end_character': 129, 'bleu_score': 1.0, 'section': 'Section::::Confederate States of America.\n'}]}, {'provenance': [{'wikipedia_id': '17832214', 'title': 'Secession in the United States', 'start_paragraph_id': 52, 'start_character': 0, 'end_paragraph_id': 52, 'end_character': 1128, 'bleu_score': 0.9621117128509721, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 546246900437832331}, 'section': 'Section::::Civil War era political and legal views on secession.:South Carolina.\n'}]}]