180766
Various entertainments , parades and ceremonies were undertaken , including Czar Alexander 's levee on 8 June , at the house of the Duke of Cumberland , followed by the Queen 's court at the palace in the evening .
 Czar Alexander, Duke
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Czar Alexander, Duke