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Security officer Michael Groves and British shipmate Som Bahadur Gurung ( an ex - Gurkha ) were honoured for their bravery by Queen Elizabeth II at Buckingham Palace on Wednesday 16 May 2007 , receiving the Queen 's Gallantry Medal and the Queen 's Commendation for Bravery respectively .
 Queen Elizabeth II, Queen, Queen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Queen Elizabeth II, Queen, Queen