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: Just a strip of tarmac lined either side by overhanging trees.

SOLUTION: Singular

PROBLEM: My teacher shifted uncomfortably.

SOLUTION: Singular

PROBLEM: The solar lamp alone isn't strong enough anymore. "

SOLUTION:
Singular