Question: what chromosome has the genetic mutation for huntington's disease
[{'answer': 'chromosome 4', 'provenance': [{'wikipedia_id': '47878', 'title': "Huntington's disease", 'start_paragraph_id': 14, 'start_character': 187, 'end_paragraph_id': 14, 'end_character': 199, 'bleu_score': 1.0, 'section': 'Section::::Genetics.:Genetic mutation.\n'}]}, {'provenance': [{'wikipedia_id': '47878', 'title': "Huntington's disease", 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 612, 'bleu_score': 0.882788245309552, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6931582032765654121}, 'section': 'Section::::Genetics.:Genetic mutation.\n'}]}]