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: "Atchison County is named after a major general in the Missouri State Militia of what year?" whose answer is 1838.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Atchison County Missouri named after
Useful Output:

Doc 1: Located in the extreme northwest corner of Missouri and bordered by Nebraska and Iowa, Atchison County was named for Civil War Maj. Gen. David Rice Atchison
Doc 2: Atchison County is named for David Rice Atchison, who was a United States Senator from Missouri.  Description: The building faces east and is a two story red
Doc 3: About this Item ; Headings. - Nodaway County (Mo.)--Biography; - Atchison County (Mo.)--Biography; - United States--Biography ; Notes. - Also available in digital
Doc 4: Founded in 1843, Atchison County is one of 114 counties in the state of Missouri. Historically, Atchison County was formed from Holt County,
Doc 5: Founded, February 14, 1845 ; Named for · David Rice Atchison ; Seat · Rock Port ; Largest city, Tarkio ; Total, 550 sq mi (1,400 km2).