196806
Wekepeke Sub-basin ( Aquifer and Brook ) Primary Municipality : Sterling , Massachusetts Permanently Protected Land Area : 1,448 acres ( 13.4 square miles ) or 20 % Limited Protection Land Area ( Chap .
 Sterling , Massachusetts
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sterling , Massachusetts