Update README.md

README.md

@@ -6,9 +6,9 @@ Twitter handles from politicians in the dataset have been replaced by their name
 And means the author is retweeting Trump calling someone else a liar, not the author calling Trump a liar.
 
 Stance:  
-  -1: Against  
-   0: Neutral  
-   1: Support  
+  -1: Against: The document is critical of the target.  
+   0: Neutral: The document doesn't express an opinion about the target or it can't be determined what the expressed opinion is with the given context.  
+   1: Support: The document expresses support for the target. Expressing collaboration on bills or letters is considered support.  
  
 Label:  
   0: Entail