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: SCIENCE "T"ALK 
Clue: It's what the "t" stands for in tRNA

SOLUTION: transfer

PROBLEM: Category: FUTURISTIC FILMS 
Clue: 1 of 2 races Rod Taylor meets circa 800,000 A.D. in "The Time Machine"

SOLUTION: elois

PROBLEM: Category: ISTHMUS IN MAY 
Clue: This 10,400-sq.-mile region of Ukraine is joined to the mainland by the narrow Isthmus of Perekop

SOLUTION:
the crimea