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Marian Porwit 1895-1988 was a Polish military officer, a Colonel of the Polish Army and a military historian. A commander of one of the sections of the Polish front during the Siege of Warsaw of 1939, after the war he became one of the most renowned historians documenting the history of the Invasion of Poland.citation needed
 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