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: MOVIE CO-STARS 
Clue: Meryl Streep & this actress were acclaimed for playing sisters in the 1996 film "Marvin's Room"
diane keaton

Category: -OLOGIES 
Clue: Seismology studies the seismic waves produced by these plate shifts
earthquakes

Category: DRINKING SONGS 
Clue: Where's the Tabasco? In 1974 Willie Nelson was having this type of "morning"

a "bloody mary morning"