Update README.md

README.md

@@ -42,4 +42,9 @@ This dataset is a derivative of the [DTA EvalCorpus](https://kaskade.dwds.de/~mo
 
 In particular, this dataset is constructed from a subset of 85 literary documents of the DTA EvalCorpus, and then counting the normalization pairs. The dataset can be replicated from the DTA EvalCorpus from the code in the accompanying GitHub repository [aehrm/hybrid_textnorm](https://github.com/aehrm/hybrid_textnorm).
 
-The dataset is marked with [CC0 1.0 Universal](https://creativecommons.org/publicdomain/zero/1.0/?ref=chooser-v1). This is an Adaptation of the DTA EvalCorpus by Bryan Jurish, Henriette Ast, Marko Drotschmann, and Christian Thomas, licensed under the [Creative Commons Attribution-NonCommercial 3.0 Unported License](http://creativecommons.org/licenses/by-nc/3.0/). Limitations to commercial use may apply.
+The dataset is marked with [CC0 1.0 Universal](https://creativecommons.org/publicdomain/zero/1.0/?ref=chooser-v1). This is an Adaptation of 
+- the DTA EvalCorpus by Bryan Jurish, Henriette Ast, Marko Drotschmann, and Christian Thomas, licensed under the [Creative Commons Attribution-NonCommercial 3.0 Unported License](http://creativecommons.org/licenses/by-nc/3.0/),
+- historical source text by the Deutsche Textarchiv, licensed under the [Creative Commons Attribution-NonCommercial 3.0 Unported License](http://creativecommons.org/licenses/by-nc/3.0/),
+- contemporary target text by TextGrid, licensed under the [Creative Commons Attribution 3.0 Unported License](http://creativecommons.org/licenses/by/3.0/),
+- contemporary target text by Project Gutenberg, licensed under the [Project Gutenberg License](https://www.gutenberg.org/policy/license.html). 
+Conditions on attribution and/or restrictions to commercial use may apply.