Complex sentence: The palace is a neoclassical building by architect Ventura Rodriguez, it was commissioned by the I Duke of Berwick and Liria James Fitz-James at the service of King Felipe V of Spain.
Split into simpler sentences: The palace is a neoclassical building by architect Ventura Rodriguez. It was originally commissioned by the I Duke of Berwick and Liria James Fitz-James, who were in the service of King Felipe V of Spain.