29815
Through discussions with other like-minded people , Peter Layton identified the need for a unified , National Society , to represent the interests of enthusiasts of glass more generally , within the national and international community .
 None
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:  
Answer:
 None