Complex sentence: Luna Island is a small island in Niagara Falls, New York between the American Falls and Bridal Veil Falls, which are two of the waterfalls that make up Niagara Falls.
Split into simpler sentences: Luna Island is a small island in Niagara Falls, New York. It is between the American Falls and Bridal Veil Falls, which are two of the waterfalls that make up Niagara Falls.