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.

[EX Q]: Category: MEDICINE 
Clue: Robert Koch, in 1876, was the first to identify the bacterium causing a specific disease, this disease of cattle & man
[EX A]: anthrax

[EX Q]: Category: SPORTS STARS 
Clue: Paul Azinger donned a tam-o'-shanter & tucked his pants into argyle socks during a eulogy for this man
[EX A]: payne stewart

[EX Q]: Category: SCIENTIFIC AMERICANS 
Clue: Vera Rubin & W. Kent Ford used this name for the invisible substance whose pull holds galaxies together
[EX A]:
dark matter