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.

[Q]: 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
[A]: lake pontchartrain


[Q]: Category: SLEEP 
Clue: Normally this activity is harmless, but make sure the person doesn't fall down the stairs
[A]: sleepwalking


[Q]: Category: RED ROVER, RED ROVER 
Clue: This NASA "Lab" based in Pasadena designed the rovers used on Mars
[A]:
jpl