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After two months at Marseilles , on 15 December 1874 Conrad , who had just turned seventeen , began his first sea voyage — as a passenger in a small barque , the Mont-Blanc , which reached Saint-Pierre , Martinique , in the Caribbean , on 6 February 1875 .
 Conrad, Saint-Pierre , Martinique, Caribbean
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Conrad, Saint-Pierre , Martinique, Caribbean