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Young helped Celtic fifteen trophies in total , comprising nine league championships and six Scottish Cup s. Young made one appearance for the Scotland national football team , against Ireland in 1906 .
 Young, Celtic, Scottish, Young, Scotland national football team, Ireland
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Young, Celtic, Scottish, Young, Scotland national football team, Ireland