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Ratko VujoviA Vujovic was born on 16 December 1916 in Nik sic, Montenegro. Before the start of World War II, he was a student. As a member of the Communist Party of Yugoslavia, he was active since 1938. He also took part in the Spanish Civil War.
 place of birth: Ratko VujoviA, Nik
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: place of death, place of birth, education degree, education institution 
Text: {0} 
Answer:
 place of birth: Ratko VujoviA, Nik