71488
He was a well-known writer in the 1930s , whose writings were influenced by his own teacher and mentor , the American philosopher John Dewey .
 person: John Dewey
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: John Dewey 
Answer:
 person: John Dewey