Question: who played young spock in star trek 3
[{'answer': 'Carl Steven', 'provenance': [{'wikipedia_id': '206879', 'title': 'Star Trek III: The Search for Spock', 'start_paragraph_id': 13, 'start_character': 737, 'end_paragraph_id': 13, 'end_character': 748, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'answer': 'Vadia Potenza', 'provenance': [{'wikipedia_id': '206879', 'title': 'Star Trek III: The Search for Spock', 'start_paragraph_id': 13, 'start_character': 750, 'end_paragraph_id': 13, 'end_character': 763, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'answer': 'Stephen Manley', 'provenance': [{'wikipedia_id': '206879', 'title': 'Star Trek III: The Search for Spock', 'start_paragraph_id': 13, 'start_character': 765, 'end_paragraph_id': 13, 'end_character': 779, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'answer': 'Joe W. Davis', 'provenance': [{'wikipedia_id': '206879', 'title': 'Star Trek III: The Search for Spock', 'start_paragraph_id': 13, 'start_character': 784, 'end_paragraph_id': 13, 'end_character': 796, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'provenance': [{'wikipedia_id': '206879', 'title': 'Star Trek III: The Search for Spock', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 929, 'bleu_score': 0.9881300380564421, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9805284404141240492}, 'section': 'Section::::Cast.\n'}]}]