Input: Article: The first recorded European excursions into what is now called Tennessee were three expeditions led by Spanish explorers, namely Hernando de Soto in 1540, Tristan de Luna in 1559, and Juan Pardo in 1567. Pardo recorded the name "Tanasqui" from a local Indian village, which evolved to the state's current name. At that time, Tennessee was inhabited by tribes of Muscogee and Yuchi people. Possibly because of European diseases devastating the Indian tribes, which would have left a population vacuum, and also from expanding European settlement in the north, the Cherokee moved south from the area now called Virginia. As European colonists spread into the area, the Indian populations were forcibly displaced to the south and west, including all Muscogee and Yuchi peoples, the Chickasaw and Choctaw, and ultimately, the Cherokee in 1838.

Now answer this question: Which Native American people left Tennessee for the Virginia area because of encroaching Europeans?

Output: Cherokee

Input: Article: Frederic Francois Chopin (/opn/; French pronunciation: [fe.de.ik f.swa .p]; 22 February or 1 March 1810 17 October 1849), born Fryderyk Franciszek Chopin,[n 1] was a Polish and French (by citizenship and birth of father) composer and a virtuoso pianist of the Romantic era, who wrote primarily for the solo piano. He gained and has maintained renown worldwide as one of the leading musicians of his era, whose "poetic genius was based on a professional technique that was without equal in his generation." Chopin was born in what was then the Duchy of Warsaw, and grew up in Warsaw, which after 1815 became part of Congress Poland. A child prodigy, he completed his musical education and composed his earlier works in Warsaw before leaving Poland at the age of 20, less than a month before the outbreak of the November 1830 Uprising.

Now answer this question: At what age did Frederic depart from Poland?

Output: 20

Input: Article: A resin used for making non-wrinkle shirts releases formaldehyde, which could cause contact dermatitis for some people; no disclosure requirements exist, and in 2008 the U.S. Government Accountability Office tested formaldehyde in clothing and found that generally the highest levels were in non-wrinkle shirts and pants. In 1999, a study of the effect of washing on the formaldehyde levels found that after 6 months after washing, 7 of 27 shirts had levels in excess of 75 ppm, which is a safe limit for direct skin exposure.

Now answer this question: How many months of washing did a 1999 study look at?

Output:
6