Question: What novel written by an Irish novelist, playwright and satirist,  who wrote under the pseudonym Flann O'Brien, was published by MacGibbon & Kee in 1967?
Sentence (from "Brian O'Nolan"): His English language novels, such as "At Swim-Two-Birds", and "The Third Policeman", were written under the "pen name" Flann O'Brien.
Relevant evidence: Yes