In this task, you're given an ambiguous question (which can be answered in more than one way). Your task is to write a question that clarifies the given question in such a way that the generated question has one unique answer.

Who demonstrated that a reflex could be conditioned to a neutral stimulus?
Who is best-known for demonstrating that a reflex could be conditioned to a neutral stimulus?

Who is the actor who plays jacob in twilight?
Who is the actor who plays jacob in the 2008 twilight film?

When was 1000 rs note introduced in india?

When was 1000 rs note first introduced in india?