. . . "Jan Prosnak"@en . "Jan"@en . "J." . . "J. Prosnak" . . "Ân" . "Jan Stanisław" . "1904" . . "http://www.wikidata.org/entity/Q6581097" . . "Ân Prosnak" . "1987" . "Prosnak"@en . . . . "J. Prosnak" . . . "Jan Stanisław Prosnak" . . .