Update README.md

Specified fine-tuning dataset

README.md

@@ -17,7 +17,7 @@ should probably proofread and complete it, then remove this comment. -->
 
 # bert-finetuned-ner
 
-This model is a fine-tuned version of [bert-base-cased](https://huggingface.co/bert-base-cased) on an unknown dataset.
+This model is a fine-tuned version of [bert-base-cased](https://huggingface.co/bert-base-cased) on this [dataset](https://bitbucket.org/soegaard/aave-pos16/src/master/data) published alongside [Jørgensen et al. 2016](https://aclanthology.org/N16-1130.pdf).
 It achieves the following results on the evaluation set:
 - Loss: 0.2582
 - Precision: 0.8632