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History The Shellharbour City Dragons were formed from current Illwarra Carlton League and former Group 7 Rugby League member , the Shellharbour Sharks .
 Shellharbour, Dragons, Illwarra Carlton League, Group 7 Rugby League, Shellharbour
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Shellharbour, Dragons, Illwarra Carlton League, Group 7 Rugby League, Shellharbour