Question: who played nellie in little house on the prairie
[{'answer': 'Alison Margaret Arngrim', 'provenance': [{'wikipedia_id': '804253', 'title': 'Alison Arngrim', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '804253', 'title': 'Alison Arngrim', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 355, 'bleu_score': 0.854450709419842, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8902312677762278077}, 'section': 'Section::::Abstract.'}]}]