In this task, you are given a sentence and question which can be answered using the sentence. Your task is to answer the question using the information from the sentence. The answer to the question is unique and it is a continuous text span from the sentence.

Sentence: It is for the most part mutually intelligible with the other Oghuz languages , which include Azerbaijani , Gagauz , Turkmen and Urum , and to a varying extent with the other Turkic languages . 
 Question: what is  varying?
extent