Question: when did the last state became a state
[{'answer': 'Hawaii', 'provenance': [{'wikipedia_id': '497704', 'title': 'List of U.S. states by date of admission to the Union', 'start_paragraph_id': 18, 'start_character': 12, 'end_paragraph_id': 18, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::See also.\n'}]}, {'answer': 'August 21 , 1959', 'provenance': [{'wikipedia_id': '497704', 'title': 'List of U.S. states by date of admission to the Union', 'start_paragraph_id': 18, 'start_character': 81, 'end_paragraph_id': 18, 'end_character': 96, 'bleu_score': 1.0, 'section': 'Section::::See also.\n'}]}, {'provenance': [{'wikipedia_id': '497704', 'title': 'List of U.S. states by date of admission to the Union', 'section': 'Section::::See also.\n', 'start_paragraph_id': 18, 'end_paragraph_id': 18, 'meta': {'evidence_span': ['BULLET::::- Hawaii Admission Act, admitting Hawaii as a state in the Union as of August 21, 1959', 'Hawaii', 'Hawaii Admission Act, admitting Hawaii as a state in the Union as of August 21, 1959']}}]}]