preferred_name: Able to use a specially adapted telephone (for example, large numbers on the dial, teletype phone for the deaf) and call essential numbers.
preferred_name_lc: able to use a specially adapted telephone (for example, large numbers on the dial, teletype phone for the deaf) and call essential numbers.
label: Able to use a specially adapted telephone (for example, large numbers on the dial, teletype phone for the deaf) and call essential numbers.
label_lc: able to use a specially adapted telephone (for example, large numbers on the dial, teletype phone for the deaf) and call essential numbers.