Question: when was the last time alabama had a democrat as a senator
[{'answer': '2018', 'provenance': [{'wikipedia_id': '416328', 'title': 'List of United States Senators from Alabama', 'start_paragraph_id': 1, 'start_character': 365, 'end_paragraph_id': 1, 'end_character': 369, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]