Complex sentence: Riau Islands Province (acronym: "Kepri") is the fastest growing province of Indonesia by population, consisting of the principal group of the Riau Archipelago, together with other island groups to the south, east and northeast.
Split into simpler sentences: Riau Islands Province (acronym: "Kepri") is a province of Indonesia. It comprises the principal group of the Riau Archipelago, together with other island groups to the south, east and northeast.