Given a statement, generate a question such that the answer is contained in that statement.

Input: Consider Input: certain therapsids became more mammal-like as they grew.

Output: How did certain therapsids become?

Input: Consider Input: paleontologists study dinosaur skeletons

Output: What do paleontologists study?

Input: Consider Input: comparators, flats, and microscopes could be used for observing materials up close
Output: What could be used for comparators, flats, and microscopes?