preferred_name: fall involving ice-skates, skis, roller-skates or skateboards (history)
preferred_name_lc: fall involving ice-skates, skis, roller-skates or skateboards (history)
label: fall involving ice-skates, skis, roller-skates or skateboards (history)
label_lc: fall involving ice-skates, skis, roller-skates or skateboards (history)