Question: why was there so much interest in cuba both before and after the civil war
[{'answer': 'sugar markets', 'provenance': [{'wikipedia_id': '28265', 'title': 'Spanish–American War', 'start_paragraph_id': 13, 'start_character': 105, 'end_paragraph_id': 13, 'end_character': 118, 'bleu_score': 1.0, 'section': 'Section::::Historical background.:American interest in the Caribbean.\n'}]}, {'provenance': [{'wikipedia_id': '28265', 'title': 'Spanish–American War', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 504, 'bleu_score': 0.9653120192732421, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2514719764963389138}, 'section': 'Section::::Historical background.:American interest in the Caribbean.\n'}]}]