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 conclusion can be drawn about juliet based on her reaction to her pending wedding? she embraces traditions. she is delighted and obedient. she is stubborn and willful. she respects authority.

In the following conversation, which group discussion technique does emily most clearly show?