remove implication man_o'_war_(medusozoa) (11) -> medusozoan (1041)
create implication hydrozoan (20) -> medusozoan (1041)
create implication hydra_(genus) (1) -> hydrozoan (20)
create implication man_o'_war_(medusozoa) (11) -> hydrozoan (20)
create implication siphonophore (8) -> hydrozoan (20)