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.

Category: HOLIDAYS AND OBSERVANCES 
Clue: The name of this Jewish holy day means "beginning of the year"
rosh hashanah

Category: LADS NAMED VLAD 
Clue: In 1929, while working for RCA, this inventor & engineer demonstrated the first practical all-electronic TV
vladimir zworykin

Category: BOOKS ABOUT PRESIDENTS 
Clue: "Soldier, Planter, Statesman of the Old Southwest"

zachary taylor