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: PERSONAL FOWLS 
Clue: The Greek goddess Hera was associated with (& probably proud as) this showy bird, Pavo muticus
a peacock

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

Category: WORLD GEOGRAPHY 
Clue: In ancient times, this "mother" river of Russia was known as the Rha

volga