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From 1855 – 57 he worked in an architect 's office in Gower Street but gave up architecture to become a student at the British Museum and at James Mathews Leigh 's art school .
 person: James Mathews Leigh; organization: art school
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: James Mathews Leigh, art school 
Answer:
 person: James Mathews Leigh; organization: art school