Update README.md

README.md

@@ -33,7 +33,7 @@ This is the model card for the Findings of EMNLP 2021 paper [REBEL: Relation Ext
 
 The original repository for the paper can be found [here](https://github.com/Babelscape/rebel)
 
-Be aware that the inference widget at the right does not output special tokens, which are necessary to distinguish the subject, object and relation types.
+Be aware that the inference widget at the right does not output special tokens, which are necessary to distinguish the subject, object and relation types. For a demo of REBEL and its pre-training dataset check the [Spaces demo](Babelscape/rebel-demo).
 
 ## Pipeline usage