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Its main tributaries are the Rognon , the Blaise , the Saulx , the Ourcq , the Petit Morin and the Grand Morin .
 location: Rognon; location: Blaise; location: Saulx; location: Ourcq; location: Petit Morin; location: Grand Morin
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: Rognon; location: Blaise; location: Saulx; location: Ourcq; location: Petit Morin; location: Grand Morin