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Walter ( Rocky ) Leja ( 1921 – 1992 ) was a Canadian military hero who dismantled two separatist bombs hidden in a mailbox at the corner of Lansdowne and Westmount Avenue on May 17 , 1963 .
 Walter, Leja, Westmount
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Walter, Leja, Westmount