129113
The region consists of the Quabbin Reservoir and accompanying river systems in Franklin , Hampden , Hampshire , and Worcester counties .
 Quabbin Reservoir, Franklin, Hampden, Hampshire, Worcester
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Quabbin Reservoir, Franklin, Hampden, Hampshire, Worcester