What is the fine-grained topic of the following text: prisoner, Majid Khan, pleaded guilty at Guantánamo to being a courier for Al Qaeda, his lawyers were warned that any mention of the word “torture” would lead a court security officer to trigger a mute button so the public, listening on a 40-second delay, would not hear it. Only return the topic.
Majid Khan's Guantánamo court trial restrictions