The bulk update request #38 has been approved by @iamtakingiteasy.
create implication green_helmet -> green_headwear
create implication red_helmet -> red_headwear
create implication white_helmet -> white_headwear
create implication black_helmet -> black_headwear
create implication yellow_helmet -> yellow_headwear
create implication orange_helmet -> orange_headwear
create implication blue_helmet -> blue_headwear
create implication violet_helmet -> violet_headwear
subset