Input: Oklahoma
Evidence exists that native peoples traveled through Oklahoma as early as the last ice age. Ancestors of the Wichita and Caddo lived in what is now Oklahoma. The Panhandle culture peoples were precontact residents of the panhandle region. The westernmost center of the Mississippian culture was Spiro Mounds, in what is now Spiro, Oklahoma, which flourished between AD 850 and 1450. Spaniard Francisco Vásquez de Coronado traveled through the state in 1541, but French explorers claimed the area in the 1700s and it remained under French rule until 1803, when all the French territory west of the Mississippi River was purchased by the United States in the Louisiana Purchase.

What Spanish explorer visited Oklahoma in 1541?
Output: Francisco Vásquez de Coronado

Input: United States Air Force
The Department of the Air Force is one of three military departments within the Department of Defense, and is managed by the civilian Secretary of the Air Force, under the authority, direction, and control of the Secretary of Defense. The senior officials in the Office of the Secretary are the Under Secretary of the Air Force, four Assistant Secretaries of the Air Force and the General Counsel, all of whom are appointed by the President with the advice and consent of the Senate. The senior uniformed leadership in the Air Staff is made up of the Chief of Staff of the Air Force and the Vice Chief of Staff of the Air Force.

Who does the Secretary of the Air Force report to?
Output: Secretary of Defense

Input: Digestion
Teeth (singular tooth) are small whitish structures found in the jaws (or mouths) of many vertebrates that are used to tear, scrape, milk and chew food. Teeth are not made of bone, but rather of tissues of varying density and hardness, such as enamel, dentine and cementum. Human teeth have a blood and nerve supply which enables proprioception. This is the ability of sensation when chewing, for example if we were to bite into something too hard for our teeth, such as a chipped plate mixed in food, our teeth send a message to our brain and we realise that it cannot be chewed, so we stop trying.

What in human teeth enables proprioception?
Output: a blood and nerve supply

Input: Estonia
Modern Estonia is a fairly ethnically heterogeneous country, but this heterogeneity is not a feature of much of the country as the non-Estonian population is concentrated in two of Estonia's counties. Thirteen of Estonia's 15 counties are over 80% ethnic Estonian, the most homogeneous being Hiiumaa, where Estonians account for 98.4% of the population. In the counties of Harju (including the capital city, Tallinn) and Ida-Viru, however, ethnic Estonians make up 60% and 20% of the population, respectively. Russians make up 25.6% of the total population but account for 36% of the population in Harju county and 70% of the population in Ida-Viru county.

What number of Estonia's counties are over 80% ethnic Estonian?
Output:
Thirteen