100539
A Democrat , he has represented the Mount Vernon District ( which includes Mount Vernon , Lorton , and Belle Haven ) since 1988 ( six four year terms ) .
 Democrat, Mount Vernon, Mount Vernon, Belle Haven
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Democrat, Mount Vernon, Mount Vernon, Belle Haven