Complex sentence: Xerox vacated the premises at 1200 N. Nimitz Highway after the shooting, and they stood idle until 2004, when the producers of the TV show "Lost" built a sound stage there to film indoor scenes.
Split into simpler sentences: Xerox vacated the premises at 1200 N. Nimitz Highway after the shooting. This facility was vacant until 2004, when the producers of the TV show "Lost" built a sound stage there to film indoor scenes.