Update licence to CC BY-NC 4.0

README.md

@@ -1,7 +1,7 @@
 ---
 language:
 - en
-license: cc-by-4.0
+license: cc-by-nc-4.0
 task_categories:
 - text-classification
 - text-retrieval
@@ -139,5 +139,6 @@ Features: boolean + wildcard + FTS5 stemmed search, per-country profiles, hex ma
 
 ## Licence
 
-Dataset content © OHCHR, released under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/).  
+Dataset content © OHCHR, originally released under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/).  
+Cleaning pipeline, normalisation, Stage 4 country backfill, and all metadata additions © L. Szoszkiewicz (Adam Mickiewicz University, Poznań), released under [CC BY-NC 4.0](https://creativecommons.org/licenses/by-nc/4.0/) — free for research and education, commercial use requires permission.
 Cleaning pipeline and metadata additions © L. Szoszkiewicz (Adam Mickiewicz University, Poznań).