Update README.md

README.md

@@ -17,3 +17,5 @@ Dataset consists of 45278 examples in russian language of format:
     'a': 'correct answer text',
     'context': 'text of 4-10 text chunks, one with right answer and others relevant with text and question on tematic and keywords'
   }
+
+Length of one example of context + question + answer is less than 7000 symbols. It should be less than 2048 tokens of gpt tokenizer.