Question: where was little house on the prairie tv show set
[{'answer': 'Walnut Grove , Minnesota', 'provenance': [{'wikipedia_id': '521317', 'title': 'Little House on the Prairie (TV series)', 'start_paragraph_id': 6, 'start_character': 188, 'end_paragraph_id': 6, 'end_character': 212, 'bleu_score': 1.0, 'section': 'Section::::Premise.\n'}]}, {'provenance': [{'wikipedia_id': '521317', 'title': 'Little House on the Prairie (TV series)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 618, 'bleu_score': 0.9361513187086311, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10443228178725828327}, 'section': 'Section::::Abstract.'}]}]