Question: who were all the countries involved in the spanish american war
[{'answer': 'United States', 'provenance': [{'wikipedia_id': '28265', 'title': 'Spanish–American War', 'start_paragraph_id': 1, 'start_character': 80, 'end_paragraph_id': 1, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Cuba', 'provenance': [{'wikipedia_id': '28265', 'title': 'Spanish–American War', 'start_paragraph_id': 1, 'start_character': 187, 'end_paragraph_id': 1, 'end_character': 191, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Philippines', 'provenance': [{'wikipedia_id': '28265', 'title': 'Spanish–American War', 'start_paragraph_id': 5, 'start_character': 215, 'end_paragraph_id': 5, 'end_character': 226, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Guam', 'provenance': [{'wikipedia_id': '28265', 'title': 'Spanish–American War', 'start_paragraph_id': 5, 'start_character': 162, 'end_paragraph_id': 5, 'end_character': 166, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Puerto Rico', 'provenance': [{'wikipedia_id': '28265', 'title': 'Spanish–American War', 'start_paragraph_id': 5, 'start_character': 149, 'end_paragraph_id': 5, 'end_character': 160, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]