You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.

[Q]: Category: WORLD HISTORY
Clue: In a 1918 treaty, this country gave up Ukraine but soon recovered it
[A]: russia

[Q]: Category: "PH" DELIGHTS
Clue: Appropriately, Paul Nurse shared the 2001 Nobel Prize in this category
[A]: physiology

[Q]: Category: MEDICINE
Clue: For this, the book "Skin Deep" recommends such treatments as witch hazel or a cool bath
[A]:
sunburn