Question: Were Carl Jacob Burckhardt and Józef Pszenny of the same nationality?
Sentence (from "Józef Pszenny"): Józef Pszenny( born March 17, 1910 in Pruszyn, February 3, 1993 in Chicago)- Polish military commander, sapper captain of Polish Army, head of the Sapper Department of" XII- s" Warsaw District of Home Army.
Relevant evidence: Yes