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However , in 1999 trailer 56 was removed from service and has since been converted into the line 's only disabled access saloon featuring removable swivel seating , hydraulic wheelchair ramps and accommodation for carers ; at this time the car was also fitted with a public address system for use with winter saloon No. 22 for commentary guided trips of the line .
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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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