Which of the following can stand alone as a sentence main clause subordinate clause both of the above or none

In the conclusion of the radio broadcast war of the worlds, orson welles:

Aman lives on the twelfth floor of an apartment building. every morning he takes the elevator down to the lobby and leaves the building. in the evening, he gets into the elevator, and, if there is someone else in the elevator -- or if it was raining that day -- he goes back to his floor directly. otherwise, he goes to the tenth floor and walks up two flights of stairs to his apartment.

In the poem i felt a funeral, in my brain what rhyme scheme does the poet use and how does it contribute to the poem?