Complex sentence: Coco Solo was a United States Navy facility, which operated a submarine base and a naval air station, that was established 6 May 1918 that corresponds with modern-day Cativá in Panama.
Split into simpler sentences: Coco Solo was a United States Navy facility, which operated a submarine base and a naval air station, that was established 6 May 1918. The site corresponds with modern-day Cativá in Panama.