instruction:
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.
question:
Her garage was behind it ; then there were two more houses stuck back there on the left.
answer:
Singular

question:
The courtyard is shaking so badly that for a second I'm not sure I haven't caused another earthquake.
answer:
Singular

question:
Questions about what lay above them nagged at her from inside her skull.
answer:
Plural