189962
The Chicago , Rock Island and Pacific Railroad purchased the company on December 22 , 1899 .
 organization: Chicago , Rock Island and Pacific Railroad
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: Chicago , Rock Island and Pacific Railroad 
Answer:
 organization: Chicago , Rock Island and Pacific Railroad