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The boom depended partly on tourism directed to the beaches of the Costa Blanca and particularly on the second residence-construction boom which started in the 1960 s and revived again by the late 1990 s .
 Costa Blanca
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Costa Blanca