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: A WALK ACROSS THE CHARLES BRIDGE 
Clue: Originally called Stone Bridge, the Charles Bridge was built with this "stone", like the walls of the White House

SOLUTION: sandstone

PROBLEM: Category: SHATNER HAPPENS 
Clue: Bill's 200b autobiography begins, "Call me... Captain James T. Kirk, or Sergeant T.J. Hooker, or" this guy this guy

SOLUTION: denny crane

PROBLEM: Category: STEPHEN KING NOVEL PLOTS 
Clue: Coma victim wakes up, shakes hands with a politician he forsees will start nuclear armageddon

SOLUTION:
the dead zone