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The current helps preserve wooden shipwrecks by preventing wood-boring " ship worms " from reaching targets such as Ernest Shackleton 's ship , the " Endurance " .
 person: Ernest Shackleton
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Ernest Shackleton