Question: who played teenage clark kent in superman the movie
[{'answer': 'Jeff East', 'provenance': [{'wikipedia_id': '2003773', 'title': 'Jeff East', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 9, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2003773', 'title': 'Jeff East', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 372, 'bleu_score': 0.8937168577929461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12211069786863549024}, 'section': 'Section::::Abstract.'}]}]