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The higher altitudes of the islands are accessible on the islands of Fogo , where there is a road to the volcano and walks up to the crater , and the mountainous Santo Antão where there are hiking routes .
 Fogo, Santo Antão
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Fogo, Santo Antão