Question: Calais ( , traditionally ; ] ; Picard: "Calés" ; Dutch: "Kales" ) is a town and major ferry port in northern France in the department of Pas-de-Calais, of which administrative division of a country that is below prefecture or province?
Sentence (from "Calais"): Calais ( , traditionally ; ] ; Picard: "Calés" ; Dutch: "Kales" ) is a town and major ferry port in northern France in the department of Pas-de-Calais, of which it is a sub-prefecture.
Relevant evidence: Yes