Write a correct answer to the given question based on its associated fact. Make sure that your answer is contained in the associated fact. Don't be creative and introduce any new word that is not mentioned in the associated fact! Remember that the associated fact has been rearranged to form the question. So, the correct answer words must lie within the associated fact. The correct answer can be a word, phrase, or even a sentence.

Input: Consider Input: Fact: insects generally have two pairs of wings to move quickly away from predators. 
Question: what do insects have to move quickly away from predators?

Output: two pairs of wings.


Input: Consider Input: Fact: incinerated mercury can cause the ph of soil to decrease. 
Question: what can cause the ph of soil to decrease?

Output: incinerated mercury.


Input: Consider Input: Fact: When a male has an orgasm the muscle contractions proper sperm from the epididymes. 
Question: In the male orgasm, where is sperm propelled from?


Output: epididymes.