Original sentence: Perkowski was employed by the National Museum of Man in Canada in 1968-9 to conduct research for the Canadian Centre for Folk Culture Studies in the area of Wilno, Ontario, to study Kaszubian Polish folklore and traditions
Edited sentence: Perkowski wrotes about a Kashubian Idiolect from Kłączno in USA and was employed by the National Museum of Man in Canada in 1968-9 to conduct research for the Canadian Centre for Folk Culture Studies in the area of Wilno, Ontario, to study Kaszubian Polish folklore and traditions