You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
This task is about identifying the subject of a given sentence. The subject of a sentence is the person, place, or thing that is performing the action of the sentence. The subject represents what or whom the sentence is about. Each sentence in this task is guaranteed to contain a single subject. The input is a sentence and the output is the identified subject of that sentence.

The nickname of the  team of University of Nebraska at Omaha is mavericks.
Solution: University of Nebraska
Why? This is a good example since the subject of the sentence (University of Nebraska) is correctly identified.

New input: Andrew Mitchell is the leader of Birmingham.
Solution:
Birmingham