preferred_name: Master's degree (e.g., MA, MS, MEng, MEd, MSW, MBA)
preferred_name_lc: master's degree (e.g., ma, ms, meng, med, msw, mba)
label: Master's degree (e.g., MA, MS, MEng, MEd, MSW, MBA)
label_lc: master's degree (e.g., ma, ms, meng, med, msw, mba)