Complex sentence: Sesquiplane types, which were biplanes with abbreviated lower wings included the French Nieuport 17 and German Albatros D.III, offered slightly lower drag than a conventional biplane while being stronger than a monoplane.
Split into simpler sentences: Sesquiplane types, which were biplanes with abbreviated lower wings included the French Nieuport 17 and German Albatros D.III. The sesquiplane format offered slightly lower drag than a conventional biplane while being stronger than a monoplane.