51827
This was the case because where the plaintext contained a repeated character and the " psi " wheels did not move on , the differenced " psi " character ( " Δ " ) would be the null character ( ' ' at Bletchley Park ) .
 location: Bletchley Park
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: Bletchley Park 
Answer:
 location: Bletchley Park