Premise: World War II ( often abbreviated to WWII or WW2 ) , also known as the Second World War , was a global war that lasted from 1939 to 1945 , although related conflicts began earlier . The Soviet Union and the United States emerged as rival superpowers , setting the stage for the Cold War , which lasted for the next 46 years .
Hypothesis: World War II took place over years.
Label: ENTAILMENT