Update README.md

README.md

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 ### Dataset Summary
 
-The data set contains 346 British English speakers' speech data, all of whom are English locals. Around 392 sentences of each speaker. The valid data is 199 hours. Recording environment is quiet. Recording contents contain various categories like economics, news, entertainment, commonly used spoken language, letter, figure, etc.
+This dataset is just a sample of 346 British English speakers' speech dataset(paid dataset), all of whom are English locals. Around 392 sentences of each speaker. The valid data is 199 hours. Recording environment is quiet. Recording contents contain various categories like economics, news, entertainment, commonly used spoken language, letter, figure, etc.
                                                                                                                                 
-For more details, please refer to the link: https://www.nexdata.ai/datasets/speechrecog/80?source=Huggingface
+For more details & to download the rest of the dataset(paid),please refer to the link: https://www.nexdata.ai/datasets/speechrecog/80?source=Huggingface
 
 ### Supported Tasks and Leaderboards