Question: who held the most seats in the senate in 1818
[{'answer': 'Democratic - Republican', 'provenance': [{'wikipedia_id': '26996580', 'title': '1818 and 1819 United States Senate elections', 'start_paragraph_id': 1, 'start_character': 109, 'end_paragraph_id': 1, 'end_character': 136, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]