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Pongs was unconscious before he hit the ground . Stays down . Trainer gives thumbs up that he ’s ok . A few minutes later gives a magical pass to wrap the game up . 10 years after retiring sues the {@NRL@} for his brain injury . # HIAisAJoke # nrlknightscowboys
 Pongs, ground, Trainer, game, NRL, nrlknightscowboys
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: group, creative work, person, event, product, location, corporation 
Text: {0} 
Answer:
 Pongs, ground, Trainer, game, NRL, nrlknightscowboys