Task: Paraphrasing
Input (English): Question: What disease is unpreventable in the type one form but may be prevented by diet if it is of the second type? 
Answer: diabetes. 
Sentence: Diabetes is unpreventable in the type one form but may be prevented by diet if it is of the second type.
Output (English): Type one is an unpreventable form of diabetes, but type two diabetes may be prevented by diet.