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After a period of understudying Davie Provan at Celtic , Buckley went on loan to Partick Thistle in March 1983 .
 Davie Provan, Celtic, Buckley, Partick Thistle
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Davie Provan, Celtic, Buckley, Partick Thistle