In this task you are given a sentence. You must judge whether subject of the main clause is singular or plural. Label the instances as "Singular" or "Plural" based on your judgment.

Ex Input:
the sergeant mused mostly to himself, and then to the young man : " What are his plans for us ? "

Ex Output:
Singular


Ex Input:
A loud boom shook through the ship, shaking more frost atop them.

Ex Output:
Singular


Ex Input:
This wormhole was essential to our galaxy and eliminating it has already altered many present and future events. "

Ex Output:

Singular