What is a predicate nomative?

What is implied in this sentence from mark twain's "the £1,000,000 bank-note"? i was puzzled, and wanted to discuss the matter a little further, but they didn't; so i took my leave, feeling hurt and insulted to be made the butt of what was apparently some kind of a practical joke, and yet obliged to put up with it, not being in circumstances to resent affronts from rich and strong folk.

According to the author, where can we find the answer to our nation’s “most pressing problem”? does that seem logical?

Consider the role of dr. kenny in the novel. how does rukmani feel about him, and what theme is represented by their interactions? respond in at least 150 words.