Question: who played charles on little house on the prairie
[{'answer': 'Michael Landon', 'provenance': [{'wikipedia_id': '301776', 'title': 'Michael Landon', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '301776', 'title': 'Michael Landon', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 407, 'bleu_score': 0.815010399330921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14372698490335812773}, 'section': 'Section::::Abstract.'}]}]