Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.

[Q]: Fact: studying a soil sample means studying the microorganisms in that soil
[A]: studying a soil sample means studying the microorganisms in the?


[Q]: Fact: strumming a string can cause that string to vibrate
[A]: Which of these has resonating wood?


[Q]: Fact: light enters the eye through the pupil
[A]:
Light enters what through the pupil?