Question: who is elected for a six year term
[{'answer': 'Senate', 'provenance': [{'wikipedia_id': '7436762', 'title': 'Term limits in the United States', 'start_paragraph_id': 11, 'start_character': 210, 'end_paragraph_id': 11, 'end_character': 216, 'bleu_score': 1.0, 'section': 'Section::::Historical background.:Term limits in the Constitution.\n'}]}]