8166
It connected the valleys of the Potomac River and the Ohio River drainage basin on the Monongahela River .
 location: Potomac River; location: Ohio River; location: Monongahela River
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Potomac River; location: Ohio River; location: Monongahela River