Question: who played rodney dangerfield son in back to school
[{'answer': 'Keith Gordon', 'provenance': [{'wikipedia_id': '1044875', 'title': 'Back to School', 'start_paragraph_id': 1, 'start_character': 75, 'end_paragraph_id': 1, 'end_character': 87, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]