Question: where were the first railroads built in minnesota
[{'answer': 'Great Northern Railway', 'provenance': [{'wikipedia_id': '690237', 'title': 'History of Minnesota', 'start_paragraph_id': 52, 'start_character': 989, 'end_paragraph_id': 52, 'end_character': 1011, 'bleu_score': 1.0, 'section': 'Section::::Economic and social development.:Farming and railroad development.\n'}]}, {'provenance': [{'wikipedia_id': '690237', 'title': 'History of Minnesota', 'start_paragraph_id': 52, 'start_character': 0, 'end_paragraph_id': 52, 'end_character': 1436, 'bleu_score': 0.9912085779363331, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10659474291249885893}, 'section': 'Section::::Economic and social development.:Farming and railroad development.\n'}]}]