Question: who played juan epstein in welcome back kotter
[{'answer': 'Robert Hegyes', 'provenance': [{'wikipedia_id': '6332109', 'title': 'Robert Hegyes', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6332109', 'title': 'Robert Hegyes', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 294, 'bleu_score': 0.9405994129227361, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8269997314018134618}, 'section': 'Section::::Abstract.'}]}]