119833
In 1922 seven western states , all of which contained some part of the mighty Colorado River or its major tributaries , signed an agreement to regulate the use of the vital waters of the river system .
 location: Colorado River
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Colorado River 
Answer:
 location: Colorado River