Complex sentence: Federal officers arrested Theodore Kaczynski on April 3,1996, at his remote cabin outside Lincoln under suspicion of being the "Unabomber", a political terrorist who placed pressure-sensitive bombs placed inside mailed packages.
Split into simpler sentences: Federal officers arrested Theodore Kaczynski on April 3,1996, at his remote cabin outside Lincoln under suspicion of being the "Unabomber". The Unabomber is a political terrorist who placed pressure-sensitive bombs placed inside mailed packages.