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: "who ordered the japanese attack on pearl harbor?" whose answer is Emperor Hirohito.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who ordered the Japanese attack on Pearl Harbor
Useful Output:

Doc 1: At 7:48 a.m., the first wave of more than 180 Japanese planes struck Pearl Harbor. They targeted the U.S. ships, especially the eight battleships in the harbor.
Doc 2: The decision to attack Pearl Harbor was made by the high command of the Japanese army, against the advice of the ranking admirals of the Japanese navy.
Doc 3: In reality, Japan attacked the U.S naval base due to oil embargo. Actually, the U.S cut off its exportation of oil which caused Japanese machines to cease to
Doc 4: Though Hideki Tojo wasn't the man who orchestrated the attack on Pearl Harbor, and still required the Emperor's approval before going ahead with
Doc 5: Admiral Isoroku Yamamoto was the mastermind behind the Pearl Harbor attack and the air raid was his idea.