Question: who was the first president identified as a democrat
[{'answer': 'Andrew Jackson', 'provenance': [{'wikipedia_id': '5043544', 'title': 'Democratic Party (United States)', 'start_paragraph_id': 1, 'start_character': 310, 'end_paragraph_id': 1, 'end_character': 324, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]