Question: what type of mutation produces the bcr-abl chimeric protein
[{'answer': 'chromosomal translocation', 'provenance': [{'wikipedia_id': '9652398', 'title': 'Fusion protein', 'start_paragraph_id': 1, 'start_character': 705, 'end_paragraph_id': 1, 'end_character': 730, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'tandem duplication', 'provenance': [{'wikipedia_id': '9652398', 'title': 'Fusion protein', 'start_paragraph_id': 1, 'start_character': 732, 'end_paragraph_id': 1, 'end_character': 750, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'retrotransposition', 'provenance': [{'wikipedia_id': '9652398', 'title': 'Fusion protein', 'start_paragraph_id': 1, 'start_character': 755, 'end_paragraph_id': 1, 'end_character': 773, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '9652398', 'title': 'Fusion protein', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1153, 'bleu_score': 0.9666950091602231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9350971409232101201}, 'section': 'Section::::Abstract.'}]}]