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Brain Drain ( ) is a 2009 Spanish romantic-comedy film directed by Fernando González Molina and starring by Mario Casas and Amaia Salamanca .
 Mario Casas, Amaia Salamanca
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mario Casas, Amaia Salamanca