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For example , in most systems of logic ( but not in intuitionistic logic ) Peirce 's law ( ( ( " P " → " Q " ) → " P " ) → " P " ) is a theorem .
 person: Peirce
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: Peirce