Update README.md

README.md

@@ -29,7 +29,7 @@ there's no official nascar poem
 
 # Dataset stats
 
-Total dataset size are 136039 and splitted into train-test-validation via 7-2-1 ratio. 
+Total dataset size are 136039 and splitted into train-test-validation via 7-2-1 ratio. The split are same as [alexa-qa-with-rank](https://huggingface.co/datasets/theblackcat102/alexa-qa-with-rank), so no train question in alexa-qa can be found in validation and test splits in alex-qa-with-rank.
 
 Train : 95,227