Operation Zahnarzt (literally "Dentist") was a plan by the Germans to eliminate the Third Army during World War II. The plan of Operation Zahnarzt was to immediately come after Operation Nordwind. The plan was to initiate a pincer movement to encircle and destroy the 3rd US Army. Using only the above description and what you know about the world, "The german Operation Zahnarzt plan failed" is definitely correct, incorrect, or inconclusive? 