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.

[Q]: Fact: ancestors of hagfish probably had backbones. 
Question: What did ancestors of hagfish probably have?
[A]: backbone.


[Q]: Fact: The enclosure of the lower part of the flower is usually green. 
Question: The enclosure of the lower part of the flower is what?
[A]: usually green.


[Q]: Fact: eyes are used for seeing by pigs by sensing light. 
Question: what uses eyes for seeing by sensing light?
[A]:
pigs.