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: TRANSPORTATION 
Clue: In the 19th century Gustavus Swift developed this type of railway car to preserve his packed meat

SOLUTION: refrigerator car

PROBLEM: Category: RED ROVER, RED ROVER 
Clue: This NASA "Lab" based in Pasadena designed the rovers used on Mars

SOLUTION: jpl

PROBLEM: Category: AMERICA-PODGE 
Clue: All roads lead to Rome, but no roads lead to this rhyming Alaska city

SOLUTION:
nome