105138
Mayer participated in the July 26 , 1939 , Warsaw conference at which the Cipher Bureau disclosed its achievements in Enigma decryption to French and British intelligence representatives .
 person: Mayer; location: Warsaw
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: Mayer, Warsaw 
Answer:
 person: Mayer; location: Warsaw