You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "what nation did japan turn into a colony?" whose answer is Korea.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did japan colonize another nation
Useful Output:

Doc 1: Japan's rise as a colonial power  Japan was the only Asian country to escape colonization from the West. European nations and the United States
Doc 2: Japan, Korea, and Thailand are the only other nations never to have been colonized by Europeans. The concept of colonialism is closely linked to
Doc 3: Japan took Europe's lead, creating colonies of its own in Korea, Taiwan, and China, and becoming an imperial power by the twentieth century,
Doc 4: The answer on the American side is simple: the Japanese bombing of Pearl Harbor. The Americans were angry at the Japanese for their invasions of first Manchuria
Doc 5: Japan attacked the U.S Pacific Fleet on the 7th of December 1941, but what led to that decision? Why did the Japanese attack the USA? - The answer is oil. In