48902
Many historians and the NCAA state that the oldest rivalry with a trophy is between what is now Arizona and Arizona State , the Territorial Cup did not start changing hands until 2001 , as it was a one-time award after their first series in 1899 .
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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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