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: The opening strains of a Strauss waltz filled the room, and the dancers looked about in confusion.

SOLUTION: Plural

PROBLEM: Others who knew him only saw the way he lied, cheated, swindled and manipulated people.

SOLUTION: Plural

PROBLEM: " The footprints lead off into the forest, away from camp and the cabins.

SOLUTION:
Plural