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.

Fact: Hot vapor makes the haze denser. 
Question: When does haze get denser?
When the water is hot.

Fact: penguins are endothermic tetrapod vertebrates. 
Question: what are endothermic tetrapod vertebrates?
penguins.

Fact: A pulmonologist can sometimes treat the negative impact of mold spores on lungs. 
Question: What specialist can treat the negative impact of mold spores on lungs?

pulmonologist.