Update README.md

README.md

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-This dataset has been indexed to UniversalCEFR and its transformed version (JSON) has the same license the original dataset. Please cite the following paper/s below if you are going to use this dataset.
+This dataset has been indexed in the UniversalCEFR. The transformed version (in JSON format) retains the same license as the original dataset. Ownership and copyright remain with the original creators and/or dataset paper authors. If you use this transformed dataset, you must cite the following:
 
 Dataset License: cc-by-nc-4.0
 
 Dataset Repository: https://www.edia.nl/resources/elg/downloads
 
-Reference: Breuker, M. (2023). CEFR Labelling and Assessment Services. In: Rehm, G. (eds) European Language Grid. Cognitive Technologies. Springer, Cham. https://doi.org/10.1007/978-3-031-17258-8_16
+Original Dataset Paper: Breuker, M. (2023). CEFR Labelling and Assessment Services. In: Rehm, G. (eds) European Language Grid. Cognitive Technologies. Springer, Cham. https://doi.org/10.1007/978-3-031-17258-8_16