Complex sentence: Jim Sanborn (born 1945 in Washington, D.C.) is an American sculptor, best known for creating the encrypted "Kryptos" sculpture at CIA headquarters in Langley, Virginia.
Split into simpler sentences: Jim Sanborn (born 1945 in Washington, D.C.) is an American sculptor. He is best known for creating the encrypted "Kryptos" sculpture at CIA headquarters in Langley, Virginia.