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: Things were going even better than he had planned and it was all because of Misty.

SOLUTION: Plural

PROBLEM: " Flight # 408 now loading at gate 4B on the north concourse, " came over the loudspeaker.

SOLUTION: Singular

PROBLEM: A small speedboat approached the shore slowing as it neared.

SOLUTION:
Singular