247696
During the 10 and 12 October in the year 1986 was managed group exhibition Confrontation V. by Czechoslovak " underground " that 's mean " non-official action " at the Milan Peric 's farm " Svarov " close Kladno .
 Czechoslovak, underground, Milan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Czechoslovak, underground, Milan