instruction:
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.
question:
Fact: Invertebrates are animals that lack a support column. 
Question: Invertebrates are animals that lack a what?
answer:
support column.


question:
Fact: Antihistamines can help with certain infections. 
Question: What can help with sinus infections?
answer:
antihistamines.


question:
Fact: Beavers can create lakes. 
Question: How do beavers change waterways?
answer:

They make structures that split the water.