 Complete the following phrase:  Juan Manuel Sánchez de Castro born 18 April 1965 is a Spanish sprint canoer who competed from the late 1980s to the mid-1990s. He won a complete set of medals at the ICF Canoe Sprint World Championships with a gold K-2 500 m: 1991, a silver K-2 1000 m: 1991, and a bronze K-2 500 m: 