Four Policemen
The members of the Big Four , called the Four Powers during World War II , were the four major Allies of World War II: the United Kingdom , the United States , the Soviet Union and China . 
<triplet> World War II <subj> Allies of World War II <obj> participant <triplet> Allies of World War II <subj> World War II <obj> conflict <subj> United Kingdom <obj> has part <subj> United States <obj> has part <subj> Soviet Union <obj> has part <triplet> Soviet Union <subj> World War II <obj> significant event