237094
She puts Zach and Alex through their paces , but the hardest trick of all is keeping them focused on practice and not on each other as they bicker and struggle with a growing attraction between them both on and off the ice .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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