Task: Sentence Expansion
Input (English): Saint-Denis is the administrative capital ( " pre ́ fecture " ) of the French controlled island of Re ́ union , in the Indian Ocean .
Output (English): Saint-Denis ( -RSB- , or unofficially Saint-Denis de la Re ́ union for disambiguation ) is the " pre ́ fecture " ( administrative capital ) of the French overseas region and department of Re ́ union , in the Indian Ocean .