52712
Between 1824 and 1828 , the United States Army Corps of Engineers conducted surveys for a bevy of potential roads , canals , railroads , and improvements in river navigation .
 organization: United States Army Corps of Engineers
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: United States Army Corps of Engineers 
Answer:
 organization: United States Army Corps of Engineers