Question: when was hawaii annexed by the united states
[{'answer': '1898', 'provenance': [{'wikipedia_id': '4286809', 'title': 'Overthrow of the Hawaiian Kingdom', 'start_paragraph_id': 1, 'start_character': 612, 'end_paragraph_id': 1, 'end_character': 616, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4286809', 'title': 'Overthrow of the Hawaiian Kingdom', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 608, 'bleu_score': 0.699523239150109, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5052021027936317965}, 'section': 'Section::::Abstract.'}]}]