In Greek legend, the Gordian knot was the name given to an intricate knot used by Gordius to secure his oxcart. Gordius, who was a poor peasant, arrived with his wife in a public square of Phrygia in an oxcart. An oracle had informed the populace that their future king would come riding in a wagon. Seeing Gordius, the people made him king. In gratitude, Gordius dedicated his oxcart to Zeus, tying it up with a peculiar knot. An oracle foretold that he who untied the knot would rule all of Asia. According to a later legend, Alexander the Great cut the knot with his sword. From that time, "cutting the Gordian knot" came to mean solving a difficult problem.