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: These ideas already existed at that time from Hinduism.

SOLUTION: Plural

PROBLEM: Apparently the board members have been sharing what they knew about Elizabeth's fight for autonomy. "

SOLUTION: Plural

PROBLEM: The pane almost immediately disappeared.

SOLUTION:
Singular