<human>:  When the prisoners are released, they see the sun for the first time. What does this mean?
<bot>: The prisoners are released from the cave. They are freed from their imprisonment. The prisoners have been living their entire lives in a cave, where they were chained to a wall. They could not see the sun, but they had been told that the sun was far away and that they would never see it. Now that they are free, they are able to see the sun for the first time. They are amazed at what they have been missing all their lives.