preferred_name: Set of sacral nerves and coccygeal nerve [S1-S5, Co]
preferred_name_lc: set of sacral nerves and coccygeal nerve [s1-s5, co]
label: Set of sacral nerves and coccygeal nerve [S1-S5, Co]
label_lc: set of sacral nerves and coccygeal nerve [s1-s5, co]