159613
The Washington team draws from schools in Montgomery County , Prince George 's County , and the Southern Maryland Athletic Conference , which includes schools in Calvert , Charles , and St. Mary 's counties .
 Montgomery County, Prince George 's County, Maryland, Calvert, Charles, St. Mary 's
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Montgomery County, Prince George 's County, Maryland, Calvert, Charles, St. Mary 's