Question: The Long Pursuit is a 1967 novel about the escape of survivors from what battle where the Empire of Japan invaded the British stronghold of Singapore?
Sentence (from "Dương Văn Dương"): During the 1920s, Ba Dương became the leader of the Binh Xuyen, then a coalition of river pirates who extorted protection money from the sampans that traveled the canals on their way to the Cholon docks.
Relevant evidence: No