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Ian Clarke is a retired Canadian soccer player who played professionally in the A-League and National Professional Soccer League In 1996 , Clarke , brother of Chris Clarke , signed with the Vancouver 86ers of the A-League .
 Ian Clarke, A-League, National Professional Soccer League, Clarke, Chris Clarke, Vancouver 86ers, A-League
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ian Clarke, A-League, National Professional Soccer League, Clarke, Chris Clarke, Vancouver 86ers, A-League