Question: HMS "Royal Oak" was one of how many, "Revenge"-class battleships, built for the Royal Navy during the First World War?
Sentence (from "Revenge-class battleship"): There were originally to have been eight of the class, but two were later redesigned, becoming the "Renown"-class battlecruiser s, while the other, which was to have been named HMS "Resistance", was cancelled.
Relevant evidence: No