Question: who was elected president and vice president in 1952
[{'answer': 'Dwight D. Eisenhower', 'provenance': [{'wikipedia_id': '40563', 'title': '1952 United States presidential election', 'start_paragraph_id': 1, 'start_character': 146, 'end_paragraph_id': 1, 'end_character': 166, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Richard Nixon', 'provenance': [{'wikipedia_id': '40563', 'title': '1952 United States presidential election', 'start_paragraph_id': 2, 'start_character': 943, 'end_paragraph_id': 2, 'end_character': 956, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]