Complex sentence: Sometime in the late 1970s before the 1978 Lufthansa heist "The Bamboo Lounge" was burned down by Henry Hill and others with Sterno and toilet paper to make it appear to be an electrical fire.
Split into simpler sentences: Sometime in the late 1970s before the 1978 Lufthansa heist "The Bamboo Lounge" was burned down. It was allegedly set by Henry Hill and others with Sterno and toilet paper to make it appear to be an electrical fire.