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.

Q: Category: QUICK BIOS 
Clue: Born near Gzhatsk in 1934; promoted to major in 1961 shortly before liftoff, just in case; died 1968

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

A: the orinoco
****
Q: Category: SINGERS 
Clue: "Life Is A Cabaret" for this star who was 19 when she won a Best Actress Tony for "Flora, The Red Menace"

A:
liza minnelli
****