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After Penn State joined the Big Ten , the rivalry continued as an annual conference game .
 organization: Big Ten; organization: conference
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Big Ten, conference 
Answer:
 organization: Big Ten; organization: conference