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Fossil discoveries The Gibraltar Neanderthals first came to light in 1848 during excavations in the course of the construction of a fortification called Forbes ' Barrier at the northern end of the Rock of Gibraltar .
 Gibraltar, Gibraltar
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Gibraltar, Gibraltar