TASK DEFINITION: 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.
PROBLEM: Category: IT'S ALL GREEK TO ME 
Clue: This branch of medicine is from the Greek for "mind cure"

SOLUTION: psychiatry

PROBLEM: Category: RIVERS 
Clue: In 1951 it was determined that this river's source was in the Sierra Parima of Venezuela

SOLUTION: the orinoco

PROBLEM: Category: BODIES OF WATER 
Clue: Botany Bay on the coast of New South Wales, Australia is an inlet of this sea

SOLUTION:
the tasman sea