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In 1996 , he collaborated with Marta Sánchez to record the flamenco-inspired song " Obsession Confession " for the " Curdled " soundtrack .
 Marta Sánchez
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Marta Sánchez