Question: what type of protein is affected in cells of individuals with tay-sachs
[{'answer': 'beta - hexosamidase A'}, {'provenance': [{'wikipedia_id': '56481', 'title': 'Tay–Sachs disease', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 428, 'bleu_score': 0.8915808216371951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2649296179025806136}, 'section': 'Section::::Abstract.'}]}]