310165
Her countless intervals on board dated from 6 March to 10 May 1974 , a brief period during August 1974 , from 16 December 1975 to September 1976 , a short period during the month of March 1977 , and finally from 21 September to 17 October 1978 .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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