Add the `subject` field

README.md

@@ -4,8 +4,8 @@ license: mit
 
 # ZNO dataset
 
-This dataset contains 4670 machine-readable questions and answers from
-Ukrainian External independent testing (called _ЗНО_/_ZNO_ in Ukrainian).
+This dataset contains machine-readable questions and answers from Ukrainian
+External independent testing (called _ЗНО_/_ZNO_ in Ukrainian).
 
 Question subjects are:
 
@@ -30,7 +30,8 @@ Every line in a .jsonl file contains a structure like this:
     { "marker": "Г", "text": "загадка" },
     { "marker": "Д", "text": "русло" }
   ],
-  "correct_answers": ["Д"]
+  "correct_answers": ["Д"],
+  "subject": "ukrainian-language-and-literature"
 }
 
 ```
@@ -39,6 +40,14 @@ Currently, all questions have exactly one correct answer, stored in
 `correct_answers[0]`.
 
 
+## Dataset structure
+
+| Subject                             | Subset | Size           |
+|-------------------------------------|--------|----------------|
+|ukrainian-language-and-literature    | train  | 1925 questions |
+|history-of-ukraine                   | train  | 1138 questions |
+
+
 ## Pre/postprocessing
 
 * Question text is converted to Markdown.