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 simplicity, answers should be in all lower cased letters.

Input: Consider Input: Category: SOCIAL SCIENCE 
Clue: It's the study of the principles of punishment as well as the management of prisons

Output: penology


Input: Consider Input: Category: -OLOGIES 
Clue: From the Greek for "growing in", it studies the development of organisms in their earliest stages before birth

Output: embryology


Input: Consider Input: Category: HALF LIFE 
Clue: Half of Sakhalin island, Russia's largest, once belonged to this other country


Output: japan