Complex sentence: A story exists that a woman from Garelochhead in the 18th Century claimed she could walk on water, while attempting this feat infront of the residents of Garelochhead she apparently drowned as she could not swim.
Split into simpler sentences: A story exists that a woman from Garelochhead in the 18th Century claimed she could walk on water. While attempting this feat in front of the residents of Garelochhead, she apparently drowned as she could not swim.