Its not really clear :///////////////////////
The puppy in The Great Gatsby issignificant in two ways. First, it represents an attempt by Myrtle to solidify and domesticate her adulterous relationship with Tom. ... Later, the puppy plays a larger, more significant role in the novel. He is actually the reason George Wilson discovers his wife's infidelity.
Harriet Tubman highlighted the trait of defiance in the line above
I am sleeping
you are sleeping
it is 7am
I slept
you slept
it was 7am