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: GENERAL SCIENCE 
Clue: A horse's hooves are made up of this protein, the same protein found in your fingernails
[A]: keratin


[Q]: Category: UNCIVIL UNREST 
Clue: "This is the farewell kiss, you dog", said Muntader al-Zaidi as he threw both of these at Pres. Bush in Dec. 2008
[A]: his shoes


[Q]: Category: CELEBRITY COUPLES 
Clue: She married Steven Spielberg after co-starring in his film "Indiana Jones And The Temple Of Doom"
[A]:
kate capshaw