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In his Saint Patrick 's Day address in 1940 , Taoiseach ( Prime Minister ) Éamon de Valera lamented : " No country had ever been more effectively blockaded because of the activities of belligerents and our lack of ships ... " Ireland was a net food exporter .
 Éamon de Valera
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Éamon de Valera