Let hyper be a hypernym candidate, hypo be a hyper's hyponym candidate, and (hyper, hypo) be a hyponymyrelation candidate.
in the case of hyponymy-relation acquisition in English and Japanese, (s, t) ∈ D Bi could be (s=(enzyme, hydrolase), t=(Þ (meaning enzyme), AÄ$F Þ (meaning hydrolase))).