Question: when did alaska become part of the united states of america
[{'answer': 'January 3 , 1959', 'provenance': [{'wikipedia_id': '624', 'title': 'Alaska', 'start_paragraph_id': 57, 'start_character': 553, 'end_paragraph_id': 57, 'end_character': 569, 'bleu_score': 1.0, 'section': 'Section::::History.:Statehood.\n'}]}, {'provenance': [{'wikipedia_id': '624', 'title': 'Alaska', 'start_paragraph_id': 57, 'start_character': 0, 'end_paragraph_id': 57, 'end_character': 568, 'bleu_score': 0.9766041382465441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5138079610946805612}, 'section': 'Section::::History.:Statehood.\n'}]}]