Simplify the following text for a Grade 8 native English-speaking person.
Original: Knaresborough is an old and historic market town , spa town and civil parish in the Borough of Harrogate , North Yorkshire , England , located on the River Nidd , four miles east of the center of Harrogate .
Simplified: Knaresborough is a town located East of Harrogate , in North Yorkshire , England .