TASK DEFINITION: In this task you are given a sentence. You must judge whether the object of the main clause is singular(like: apple) or plural(like: apartments). Label the instances as "Singular" or "Plural" based on your judgment.
PROBLEM: He had a muscular frame that suited his six-foot height.

SOLUTION: Singular

PROBLEM: The feeling of impending doom crushed her insides when she realized she was trapped.

SOLUTION: Plural

PROBLEM: This includes ships, outposts, mining colonies, and deep-space stations.

SOLUTION:
Plural