151403
A retrospective exhibition comprising some 200 works from across the artist 's career loaned from public and private collections was held by the National Library of Wales in 2011 to coincide with his sixtieth birthday .
 organization: National Library of Wales
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: National Library of Wales 
Answer:
 organization: National Library of Wales