Question: first latin american country to have a railroad
[{'answer': 'ARG', 'provenance': [{'wikipedia_id': '40994936', 'title': 'List of Latin American rail transit systems by ridership', 'start_paragraph_id': 2, 'start_character': 25, 'end_paragraph_id': 2, 'end_character': 28, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]