該当[gaitou] corresponding to
該当者[gaitousha] person concerned
該博[gaihaku] profundity
該博な知識[gaihakunachishiki] profound knowledge
当該[tougai] appropriate (authorities)

当該官庁[tougaikanchou] proper authorities
当該人物[tougaijinbutsu] the appropriate person
該案[gaian] the said proposal
該問題[gaimondai] the matter in question
該当事項[gaitoujikou] relevant (applicable) information (items)