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: There was no quad, never had been a Henning's Café, and certainly no door on the left.

SOLUTION: Singular

PROBLEM: Lena's posture improved as she spoke.

SOLUTION: Singular

PROBLEM: When she got through, Noah's secretary advised her that Noah was in a meeting.

SOLUTION:
Singular