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The Battles of the Separation Corridor ( , Kravot Retzu'at HaNituk ) were a series of military engagements between the Israel Defense Forces and the Egyptian army in Operation Yoav , and were the centerpiece of the operation .
 organization: Israel Defense Forces; organization: Egyptian army
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Israel Defense Forces; organization: Egyptian army