80962
In 1774 , commissioners from Pennsylvania and Virginia met to negotiate their boundary , which at the time involved Pennsylvania 's southern border west of Maryland and its entire western border .
 Pennsylvania, Virginia, Pennsylvania, Maryland
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pennsylvania, Virginia, Pennsylvania, Maryland