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Taken prisoner of war by Nazi Germany, Marian Porwit spent the remainder of World War II in POW camps. Liberated in 1945, he moved to London, where he became a member of the Sikorski Institute. However, in 1946 he decided to return to Poland. He settled in Warsaw , where he continued his historical career. He died April 26, 1988 in Warsaw.
 place of death: Marian Porwit, Warsaw
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 death: Marian Porwit, Warsaw