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Former teammate , Ernie Curtis said of him : " He was one of the hardest tacklers in the game , some said he was dirty but he was just hard .
 person: Ernie Curtis
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Ernie Curtis