Question: who played little ricky on the lucille ball show
[{'answer': 'Keith Thibodeaux', 'provenance': [{'wikipedia_id': '173089', 'title': 'Richard Keith (actor)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '173089', 'title': 'Richard Keith (actor)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 333, 'bleu_score': 0.6964777291232801, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3368877437294335195}, 'section': 'Section::::Abstract.'}]}]