Given a statement, generate a question such that the answer is contained in that statement.

Input: Consider Input: Green plants are also known as producers

Output: What are green plants also known as?

Input: Consider Input: The testicles connect to the vas deferens, then the seminal vesicles, then the prostate, then the urethra.

Output: What do the testicles connect to?

Input: Consider Input: Cold temperatures are used to preserve easily spoiled foods.
Output: What is used to preserve easily spoiled foods?