Complex sentence: The original offices of the company were located in a trailer on Sea Pines Circle (the intersection of Wm. Hilton Parkway, Palmetto Bay Road, Pope Avenue, and Greenwood Drive), and the only phone on the island was a car-based mobile unit.
Split into simpler sentences: The original offices of the company were located in a trailer on Sea Pines Circle (the intersection of Wiliam Hilton Parkway, Palmetto Bay Road, Pope Avenue, and Greenwood Drive). The only phone on the island was a car-based mobile unit.