Task: Question Answering
Input (English): How to clean built-up tarnish on a brass jewelry?
Output (English): Mix 1⁄2 cup of lemon with 1 tablespoon of salt and stir until the salt is dissolved. Then, add about 2 tablespoon of flour to make a thick paste. Rub the paste onto the jewelry and let it dry for about two days, then rinse it thoroughly using cold water and dry it with clean cloth.