Question: When is the director of film Pieśniarz Warszawy 's birthday?
Sentence (from "Michał Waszyński"): In the summer of 1941, after Germany invaded the Soviet Union, Waszyński joined the newly formed Polish Army of general Władysław Anders (loyal to the Polish government in Exile in London) and subsequently was relocated to Persia (Iran), and later as a soldier of the 2nd Corps of the Polish Army to Egypt and Italy.
Relevant evidence: No