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There is speculation that this philosophy was heavily influenced by the writings of John Ruskin , who championed honesty of materials as one of the seven main emphases of architecture .
 person: John Ruskin
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 Ruskin 
Answer:
 person: John Ruskin