Complex sentence: The black jail is a US military detention camp established in 2002 inside Bagram Air Base, Afghanistan, distinct from the main prison and consisting of individual windowless concrete cells, each illuminated by a single light bulb glowing 24 hours a day.
Split into simpler sentences: The black jail is a US military detention camp established in 2002 inside Bagram Air Base, Afghanistan. The facility consists of individual windowless concrete cells, each illuminated by a single light bulb glowing 24 hours a day.