  The Japanese CCGBank serves as training and evaluation data for developing
Japanese CCG parsers. However, since it is automatically generated from the
Kyoto Corpus, a dependency treebank, its linguistic validity still needs to be
sufficiently verified. In this paper, we focus on the analysis of
passive/causative constructions in the Japanese CCGBank and show that, together
with the compositional semantics of ccg2lambda, a semantic parsing system, it
yields empirically wrong predictions for the nested construction of passives
and causatives.
