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Vanquisher was escorting Convoy OB 2 on 11 September 1939 when she collided with Walker in the North Atlantic Ocean about 200 nautical mile s ( 370 km ) southwest of Cape Clear Island , Ireland .
 Atlantic, Ireland
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Atlantic, Ireland