Question: who played percival in little house on the prairie
[{'answer': 'Steve Tracy', 'provenance': [{'wikipedia_id': '25417613', 'title': 'Steve Tracy', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25417613', 'title': 'Steve Tracy', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 177, 'bleu_score': 0.9364250605898111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16058581020852247667}, 'section': 'Section::::Abstract.'}]}]