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David Hart Dyke ( b. 1938 ) , son of Reverend Eric Hart Dyke , son of the aforementioned Colonel Percyvall Hart Dyke , is a retired Captain in the Royal Navy and commanded the H. M. S. Coventry during the Falklands War .
 David Hart Dyke, Hart Dyke, Hart Dyke, Royal Navy
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 David Hart Dyke, Hart Dyke, Hart Dyke, Royal Navy