Complex sentence: Named in association with Sullivan Glacier, after Sir William S. Gilbert (1836--1911), the British librettist, by United Kingdom Antarctic Place-Names Committee (UK-APC), 1977.
Split into simpler sentences: Named in association with Sullivan Glacier, after Sir William S. Gilbert (1836--1911), British librettist. Named by United Kingdom Antarctic Place-Names Committee (UK-APC), 1977.