Complex sentence: He is notable for his sculptures produced over forty years which are collected by people worldwide, including Sylvester Stallone and have appeared in and been produced for public institutions like the EPA, local state environmental protection offices, and the Please Touch Museum.
Split into simpler sentences: He is notable for his sculptures produced over forty years which are collected by people worldwide, including Sylvester Stallone. They have appeared in and been produced for public institutions like the EPA, local state environmental protection offices, and the Please Touch Museum.