91623
The effect of this is to convert the lower B into a lower note , almost always A natural ; this broadly lowers the pitch of the instrument ( most noticeably in the lower register ) and will often accordingly convert the lowest B to B ( and render the neighbouring C very flat ) .
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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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