Question: when did little house on the prarie take place
[{'answer': 'late nineteenth - century', 'provenance': [{'wikipedia_id': '521317', 'title': 'Little House on the Prairie (TV series)', 'start_paragraph_id': 6, 'start_character': 421, 'end_paragraph_id': 6, 'end_character': 452, 'bleu_score': 1.0, 'section': 'Section::::Premise.\n'}]}, {'provenance': [{'wikipedia_id': '521317', 'title': 'Little House on the Prairie (TV series)', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 791, 'bleu_score': 0.8269750367981381, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4806799787535666666}, 'section': 'Section::::Premise.\n'}]}]