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One of the first commanders to be raised to the newly created rank of Generaloberst in February 1916 , Krobatin was responsible for dealing with the crisis caused by Romania 's entry into the war on the side of the Entente and the sudden cutting off of resources ( particularly grain and petroleum ) that Romania 's declaration of war brought .
 Krobatin, Romania, Romania
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Krobatin, Romania, Romania