Question: central americas oldest democratic republic which has had no standing army since 1948 is
[{'answer': 'Costa Rica', 'provenance': [{'wikipedia_id': '5551', 'title': 'Costa Rica', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5551', 'title': 'Costa Rica', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 600, 'bleu_score': 0.91736391208716, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11720230582895393623}, 'section': 'Section::::Abstract.'}]}]