161865
Soil and Water Assessment Tool ( SWAT ) is a free and open source hydrology model and GIS computer simulation sponsored by the USDA .
 organization: USDA
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: USDA 
Answer:
 organization: USDA