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Although the experimental service was publicly available , there were no digital set-top boxes or receivers available on the market which could decode the signal and the service was only presented to the public via BBC demonstrations using prototype receivers .
 organization: BBC
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: BBC