Question: when did cuba gain its independence from spain
[{'answer': '1898', 'provenance': [{'wikipedia_id': '5584', 'title': 'History of Cuba', 'start_paragraph_id': 1, 'start_character': 478, 'end_paragraph_id': 1, 'end_character': 482, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5584', 'title': 'History of Cuba', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 592, 'bleu_score': 0.760261637795127, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15353087389415787187}, 'section': 'Section::::Abstract.'}]}]