Question: when were hawaii and alaska admitted to the union
[{'answer': '1959', 'provenance': [{'wikipedia_id': '497704', 'title': 'List of U.S. states by date of admission to the Union', 'start_paragraph_id': 17, 'start_character': 92, 'end_paragraph_id': 17, 'end_character': 96, 'bleu_score': 1.0, 'section': 'Section::::See also.\n'}]}]