99453
The mountain extends from the Potomac River in the north to Chester Gap in the south .
 location: Potomac River; location: Chester Gap
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Potomac River, Chester Gap 
Answer:
 location: Potomac River; location: Chester Gap