Then the teacher asks questions about the students using the target phrases. These questions are known as "Personalized Questions and Answers" (PQA). To ensure these questions are comprehensible to the students, the teacher uses a variety of techniques and comprehension checks. Depending on the responses from the students and the atmosphere of the class, these questions might lead into a scene or skit often referred to as "extended PQA". The details discovered by the teacher from PQA are often used as the basis for the class story.