Question: what european country was first introduced to the potato
[{'answer': 'Spain', 'provenance': [{'wikipedia_id': '36801884', 'title': 'History of the potato', 'start_paragraph_id': 2, 'start_character': 111, 'end_paragraph_id': 2, 'end_character': 116, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '36801884', 'title': 'History of the potato', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 1160, 'bleu_score': 0.518877498114058, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15159148415935235049}, 'section': 'Section::::History by region.:Europe.\n'}]}]