220678
It was here that he met his future collaborator on the Tunnels series of books , Brian Williams , who was at the Slade School of Fine Art .
 organization: Slade School of Fine Art
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: Slade School of Fine Art 
Answer:
 organization: Slade School of Fine Art