sentences:  Formally writing down "problem 153" in the "Scottish Book", Mazur promised as the reward a "live goose", an especially rich price during the Great Depression and on the eve of World War II.Fairly soon afterwards, it was realized that Mazur's problem was closely related to Banach's problem on the existence of Schauder bases in separable Banach spaces.Most of the other problems in the "Scottish Book" were solved regularly.