remove implication man_o'_war_(medusozoa) (15) -> medusozoan (1138)
create implication hydrozoan (25) -> medusozoan (1138)
create implication hydra_(genus) (1) -> hydrozoan (25)
create implication man_o'_war_(medusozoa) (15) -> hydrozoan (25)
create implication siphonophore (11) -> hydrozoan (25)