Question: who played lumpy on leave it to beaver
[{'answer': 'Frank Bank', 'provenance': [{'wikipedia_id': '7468932', 'title': 'Frank Bank', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7468932', 'title': 'Frank Bank', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 202, 'bleu_score': 0.833610442344303, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1397916758953398139}, 'section': 'Section::::Abstract.'}]}]