instruction:
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.
question:
His memory makes my heart ache, Anna.
answer:
Singular


question:
The sand slid off the strange material as if it was perfectly smooth.
answer:
Singular


question:
She could easily crawl off the mattress without disturbing him, whereas he didn't have a hope of doing the same.
answer:

Plural