Complex sentence: In late summer 1958, the Oberlin String Quartet toured Germany and Belgium, then won fourth prize in the Concours International de Quatuor, sponsored by H.M. Queen Elizabeth Music Competition, in Liege, Belgium.
Split into simpler sentences: In late summer 1958, the Oberlin String Quartet toured Germany and Belgium, then won fourth prize in the Concours International de Quatuor. The competition was sponsored by H.M. Queen Elizabeth Music Competition, and held in Liege, Belgium.