Complex sentence: In 1995 the southern bath and sanatoria complex were extended significantly and the Saint Adalbert spring opened two years later, as a result in 1999 Sopot regained its official spa town status.
Split into simpler sentences: In 1995 the southern bath and sanatoria complex were extended significantly and the Saint Adalbert spring opened two years later. Thanks to that in 1999 Sopot regained its official spa town status.