Update README.md

README.md

@@ -115,11 +115,13 @@ One example from the `hi` dataset is given below in JSON format.
 
 ### Data Fields
 -  `id (string)`: Unique identifier.
+-  `pivot (string)`: English sentence used as the pivot 
 -  `input (string)`: Input sentence 
 -  `references (list of strings)`: Paraphrases of `input`, ordered according to the least n-gram overlap
 -  `target (string)`: The first reference (most dissimilar paraphrase) 
 
 
+
 ### Data Splits
 
 We first select 10K instances each for the validation and test and put remaining in the training dataset. `Assamese (as)`, due to its low-resource nature, could only be split into validation and test sets with 4,420 examples each.