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 consistency, answers should be in all lower cased letters.
PROBLEM: Category: THE NEW YORK TIMES ENTERTAINMENT 
Clue: "Oil!", a 1927 novel by this muckraker, was on the New York Times Best Seller List in 2008

SOLUTION: upton sinclair

PROBLEM: Category: ENDS IN "FF" 
Clue: The heaviest of dog breeds, it can exceed 180 pounds

SOLUTION: mastiff

PROBLEM: Category: BIOLOGY 
Clue: Euglenas are microscopic organisms scientists classify in both of these groups

SOLUTION:
animals & plants