Conversation so far:
how many times has the olympic games been cancelled because of war
The 1916 Olympic Games were cancelled due to World War I, in 1940 due to the Second Sino-Japanese War, and in 1944 due to World War II.
when were women first allowed to participate in the olympic games
Women were first allowed to participate in the Olympics in 1900. However, Women weren't allowed to participate in luge until 1964, weight lifting in 2000, and boxing in 2012.
when were the first modern olympic games held
The first modern Olympics took place in 1896 in Athens.

Question: how many times has South Korea hosted
Self-contained rewrite: how many times has South Korea hosted the olympic games