TASK DEFINITION: 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.
PROBLEM: " If we screw it up, we' l definitely take you up on the offer. "

SOLUTION: Singular

PROBLEM: How soon would the vodka wear off ?

SOLUTION: Singular

PROBLEM: I' l cal you later. "

SOLUTION:
Singular