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: When BrdU is integrated into DNA , it is supposed that the bromine deforms the minor groove so that Hoechst dyes can not reach their optimal binding site .
Question: why does something deform something?
so that Hoechst dyes can not reach their optimal binding site

Sentence: According to Indian government analysis , they began the process of laying a corridor , which is now widely referred to as the Revolutionary Corridor extending from Nepal to across six Indian States , including Bihar , Chhattisgarh , Jharkhand , Andhra Pradesh , Odisha and Madhya Pradesh .
Question: what is something extending from?
Nepal to across six Indian States , including Bihar , Chhattisgarh , Jharkhand , Andhra Pradesh , Odisha and Madhya Pradesh .

Sentence: In November 1982 the Ministry of Education adopted a new authorization criterion , the so-called '' Neighboring Country Clause '' : Textbooks ought to show understanding and seek international harmony in their treatment of modern and contemporary historical events involving neighboring Asian countries .
Question: what is involved?
neighboring Asian countries .