Question: first clinical gene therapy was done for the treatment of
[{'answer': 'beta - thalassemia', 'provenance': [{'wikipedia_id': '12891', 'title': 'Gene therapy', 'start_paragraph_id': 78, 'start_character': 78, 'end_paragraph_id': 78, 'end_character': 100, 'bleu_score': 1.0, 'section': 'Section::::History.:2010s.:2010.\n'}]}, {'provenance': [{'wikipedia_id': '12891', 'title': 'Gene therapy', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 464, 'bleu_score': 0.9748377259086851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8740967260257238705}, 'section': 'Section::::Background.\n'}]}]