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In 1940, after nearly 42 years in uniform, Charles F. Humphrey retired but was not called back during World War II as he was at this point over 65 years old. He died in 1968 at Walter Reed Army Medical Center Reed Medical Center.
 place of death: Charles F. Humphrey, Walter Reed Army Medical Center
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: Charles F. Humphrey, Walter Reed Army Medical Center