Question: why is there a 2 term limit for presidents
[{'answer': 'accumulating too much power', 'provenance': [{'wikipedia_id': '70132', 'title': 'Twenty-second Amendment to the United States Constitution', 'start_paragraph_id': 7, 'start_character': 333, 'end_paragraph_id': 7, 'end_character': 360, 'bleu_score': 1.0, 'section': 'Section::::Background.\n'}]}]