Can i say this sentence, is this sentence grammatically correct. can i add it in my essay?

the sentence is:

after 4 years, a coincidence no one ever thought would happen, happened.

Read the excerpt from “the railroad earth.” o well anyway i'll be learning eventually to like the railroad and sherman will like me some day, and anyway another day another dollar. the narrator of this excerpt can best be described as friendly. optimistic. wealthy. intelligent.

What does moon shadow think about where the tang people live (text evidence)

Antony refers to brutus and his co conspirators as honorable. what effect does the continued repetition of this word have on the tone of the words around it?