Complex sentence: IV. A westward moving hurricane, nicknamed "Antje's" hurricane after a schooner of the same name that was dismasted by the storm, moved across the Florida Keys on September 4.
Split into simpler sentences: IV. A westward moving hurricane, nicknamed "Antje's" hurricane after a schooner of the same name that was dismasted by the storm. The cyclone moved across the Florida Keys on September 4.