Question: when did hawaii become a part of the united states
[{'answer': 'August 12 , 1898', 'provenance': [{'wikipedia_id': '13270', 'title': 'Hawaii', 'start_paragraph_id': 34, 'start_character': 204, 'end_paragraph_id': 34, 'end_character': 220, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '13270', 'title': 'Hawaii', 'start_paragraph_id': 34, 'start_character': 0, 'end_paragraph_id': 34, 'end_character': 335, 'bleu_score': 0.9019629427251671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11410061565960261448}, 'section': 'Section::::History.\n'}]}]