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

Ex Input:
charting ancestry on a graph is a useful tool for studying inheritance traits.

Ex Output:
What is charting ancestry on a graph a useful tool for studying?


Ex Input:
Muscles in the upper arm lengthen a person's elbow.

Ex Output:
What lengthen a person's elbow?


Ex Input:
Cows are therian mammals

Ex Output:

What type of mammals are cows?