sentence2_structure: Diabetes<>is<>unpreventable$$$it<>is<>of the second type
sentence1: Type 1 and type 2 diabetes are the primary forms of the disease.
sentence2: Diabetes is unpreventable in the type one form but may be prevented by diet if it is of the second type.
question: What disease is unpreventable in the type one form but may be prevented by diet if it is of the second type?