License update

README.md

@@ -95,3 +95,11 @@ Here is a brief list of some publications that we have used PHOIBLE data for:
   Oxford.
 
 A more complete list of research papers using PHOIBLE can be found on [Google Scholar](https://scholar.google.com/scholar?oi=bibs&hl=en&cites=576981116309388928&as_sdt=5).
+
+## License
+
+PHOIBLE code present in this repository is licensed under the MIT License. See the [LICENSE](LICENSE) file for details.
+
+PHOIBLE data and mappings are licensed under the [Creative Commons Attribution 4.0 International License](https://creativecommons.org/licenses/by/4.0/). See the [data/README.md](data/README.md) and [mappings/README.md](mappings/README.md) files for details, and [LICENSE-DATA](LICENSE-DATA) for the full text of the license.
+
+The data in raw-data is provided largely as received from the original source, with some modifications to make it easier to process. The raw data is not meant to be used directly, but rather to be processed by the scripts in the `scripts` folder to produce the aggregated data in the `data` folder. See Citing PHOIBLE above for how to cite the original source of the data, as well as PHOIBLE. See the README.md file in each folder for more information about how to cite the original source of the data.

data/README.md

@@ -36,3 +36,7 @@ various parts of the project:
 
 _All of these sites should be considered works-in-progress._ The “published”
 form of the data at https://phoible.org should be considered the most stable.
+
+## License
+
+The data in this directory is licensed under the [Creative Commons Attribution 4.0 International License](https://creativecommons.org/licenses/by/4.0/). See [../LICENSE-DATA](../LICENSE-DATA) for the full license text, and the root [README.md](../README.md#citing-phoible) for how to cite PHOIBLE.

mappings/README.md

@@ -7,6 +7,10 @@ This folder contains files that map InventoryID to metadata not stored directly
 - [InventoryID-Filenames.csv](InventoryID-Filenames.csv): InventoryID, Filename, URI. The source document each inventory was drawn from. A few InventoryIDs cite more than one source document and so have more than one row.
 - [phoible-references.bib](phoible-references.bib): BibTeX entries for the keys used in InventoryID-Bibtex.csv.
 
+## License
+
+The data in this directory is licensed under the [Creative Commons Attribution 4.0 International License](https://creativecommons.org/licenses/by/4.0/). See [../LICENSE-DATA](../LICENSE-DATA) for the full license text, and the root [README.md](../README.md#citing-phoible) for how to cite PHOIBLE.
+
 ## Known issues
 
 - InventoryID 201 (Arrernte, `aer`) has `NO SOURCE GIVEN` as its literal BibtexKey, a placeholder rather than a real citation. See [raw-data/UPSID/README.md](../raw-data/UPSID/README.md) for details.

raw-data/README.md

@@ -1,3 +1,9 @@
 # Data
 
 This folder contains the raw-data for the different sources in phoible. See the README file in each folder for more information about the source and its contents.
+
+The raw data is provided largely as received from the original source, with some modifications to make it easier to process. The raw data is not meant to be used directly, but rather to be processed by the scripts in the `scripts` folder to produce the aggregated data in the `data` folder. The aggregated data is what is used to produce the phoible.csv file in the `data` folder, which is the main data file for phoible.
+
+If you use the raw data, please cite the original source of the data, as well as phoible.
+See the README.md file in each folder for more information about how to cite the original source of the data.
+See the [Citing PHOIBLE](../README.md#citing-phoible) section in the root README for more information on how to cite phoible.