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Many of the SIGs , such as SIGGRAPH , SIGDA , SIGPLAN , SIGCSE and SIGCOMM , sponsor regular conferences , which have become famous as the dominant venue for presenting innovations in certain fields .
 SIGGRAPH, SIGDA, SIGPLAN, SIGCSE, SIGCOMM
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 SIGGRAPH, SIGDA, SIGPLAN, SIGCSE, SIGCOMM