Update README.md

README.md

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 size_categories:
 - 10K<n<100K
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 The dataset contains 12647 manually annotated Russian sentences annotated according to vagueness criterion. The value of vagueness is represented in the column *is_vague* where **0** means the absence of vague expressions in the sentence, while **1** indicates the presence of vagueness.
 
+**DATA**
+The data are represented by the interviews with Russian civil servants conducted from 2004 to 2021. The interviews were collected from the websites ConsultantPlus and Garant.ru as well as from the website of Echo of Moscow - a radio station switched off 04.03.2022 at the request of the prosecutor's office.
+
+**ANNOTATION**
+The dataset was annotated and checked twice afterwards by one expert with an interwal of two weeks. Further work on this data implies the search for new annotators to evaluate inter-annotator agreement. If you are fluent in Russian and would like to contribute, please write to the email address below. Your participation will be inestimably significant.
+
+**USE**
 This dataset can serve as training data for binary classification model to detect vagueness in Russian texts. 
 
+**CONTACT INFO**
 Please send all questions and suggestions to *schepovetskaya@hse.ru*