The treebank is licensed under the Creative Commons License Attribution-NonCommercial-ShareAlike 4.0 International.

The complete license text is available at:
http://creativecommons.org/licenses/by-nc-sa/4.0/legalcode

Details:

GUM is made available under a Creative Commons license in keeping with the underlying texts. The documents from Wikimedia (Wikinews, including interviews and bios, and Wikivoyage) are available under a CC-BY attribution license. However wikiHow texts are made available under a CC-BY-NC-SA license (non-commercial, share alike), as are the fiction texts, meaning that commercial and/or non-open source use of those texts is prohibited. Additional data from reddit, not currently included in this repository, is available under a separate license from the main GUM (non UD) repository, see the project website at https://corpling.uis.georgetown.edu/gum/ for details. 

When using the annotated data in this repository, please make sure to cite the sources of the texts as required by their source sites, and give credit to the GUM annotators, which are listed on the project website, for the annotated data.
