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: MUSEUMS OF GERMANY 
Clue: A Baden-Baden museum devoted to the works of this Russian imperial jeweler opened in 2009

SOLUTION: fabergé

PROBLEM: Category: U.S. BODIES OF WATER 
Clue: You'll find the Big Branch National Wildlife Refuge on the shore of this big lake in Louisiana

SOLUTION: lake pontchartrain

PROBLEM: Category: AIRLINES 
Clue: Though now competing with newer companies, it remains Russia's largest air carrier

SOLUTION:
aeroflot