Complex sentence: During an interim period between 1955 and 1964, the land was used as a campus for a SUNY college of science and engineering (SUNY Long Island Center), which eventually became Stony Brook University at a new location farther east on Long Island.
Split into simpler sentences: During an interim period between 1955 and 1964, the land was used as a campus for a State University of New York (SUNY) college of science and engineering which was known as SUNY Long Island Center. This eventually became Stony Brook University at a new location farther east on Long Island.