Update README.md

README.md

@@ -25,4 +25,5 @@ The QARV (Question and Answers with Regional Variance) project aims to curate a
 
 ## Version
 
-This is the first slice of the QARV dataset collected by (1) manual collection by humans or (2) GPT-4 Generation with RAG (wikipedia) and human filtering.
+This is the first slice of the QARV dataset collected by (1) manual collection by humans or (2) GPT-4 Generation with RAG (wikipedia) and human filtering. 
+Collected questions undergo a second quality filtering (removal of inadequate questions and Yes/No questions) and deduplicaton.