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.

Input: Consider Input: Category: LARGE EQUIPMENT
Clue: For smooth travel, ballast tampers & ballast regulators keep the gravel at the right level among these

Output: railroad tracks

Input: Consider Input: Category: SALAD DRESSING
Clue: This national-named dressing often made with ketchup is found in deli sandwiches

Output: russian dressing

Input: Consider Input: Category: MYTHS & LEGENDS
Clue: While Ulysses was fighting the war she kept a lock on her bedroom door
Output: penelope