Simplify the following text for a Grade 9 native English-speaking person.
Original: Overijssel comprises three regions : Kop van Overijssel in the northwest , Salland in the center of the province , and Twente in the east .
Simplified: Overijssel is made of three regions : Kop van Overijssel in the northwest , Salland in the center of the province , and Twente in the east .