116098
The first , the eastern slopes of the Rocky Mountains , is the smallest area geographically , although the largest in terms of run-off and contributed water flow .
 Rocky Mountains
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Rocky Mountains