5438
Also such location devices , some ships have smoke floats they can toss out so the man overboard will be able to use smoke signals as a way of trying to , let the rescuer locate them .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 None