Teacher: You are given an answer. Create a question for the answer.
Teacher: Now, understand the problem? If you are still confused, see the following example:
In fact, it stands for Winter. In the case of synthetic 0W-20 oil, this means that it flows as easily as a 0 Weight oil in Winter temperatures, but is as thick and viscous as a 20 Weight oil once normal engine temperature has been reached.
Solution: 0w-20: what does it mean?
Reason: The answer is explaining about the meaning of 0w-20, so the question should ask about that.

Now, solve this instance: The time between dilating to 1 cm and giving birth varies from woman to woman. One woman may go from having a closed cervix to giving birth in a matter of hours, while another is 1–2 cm dilated for days or weeks. Some women do not experience any dilation until they go into active labor.
Student:
1/2 cm dilated how much longer?