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: THE LABOR MOVEMENT 
Clue: 2-word phrase for workers' perks developed during World War II because raises were prohibited
fringe benefits

Category: HOSPITALS 
Clue: An L.A. hospital is named for this fellow, the subject of a parable in Luke
the good samaritan

Category: HISTORIC LEADERS 
Clue: Holy Roman Emperor Charles V was the grandson of this Spanish royal pair

ferdinand & isabella