Chapter 5 License
While the raw data (the plenary protocols published by the German regional states) are in the public domain, the MigParl corpus comes with a CC BY+SA license. That means:
BY - Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
SA - ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
For this and further explanations see the CC Attribution-ShareAlike 4.0 Unported License.