remove alias hooffoots (0) -> hooved_toes (1950)
remove implication hooved_toes (1950) -> hooves (146248)
remove implication hooved_digitigrade (222) -> hooved_toes (1950)
remove implication hooved_digitigrade (222) -> digitigrade (122249)
remove implication hooved_plantigrade (986) -> hooved_toes (1950)