  A noun phrase can indirectly refer to an entity that has already been
mentioned. For example, ``I went into an old house last night. The roof was
leaking badly and ...'' indicates that ``the roof'' is associated with `` an
old house}'', which was mentioned in the previous sentence. This kind of
reference (indirect anaphora) has not been studied well in natural language
processing, but is important for coherence resolution, language understanding,
and machine translation. In order to analyze indirect anaphora, we need a case
frame dictionary for nouns that contains knowledge of the relationships between
two nouns but no such dictionary presently exists. Therefore, we are forced to
use examples of ``X no Y'' (Y of X) and a verb case frame dictionary instead.
We tried estimating indirect anaphora using this information and obtained a
recall rate of 63% and a precision rate of 68% on test sentences. This
indicates that the information of ``X no Y'' is useful to a certain extent when
we cannot make use of a noun case frame dictionary. We estimated the results
that would be given by a noun case frame dictionary, and obtained recall and
precision rates of 71% and 82% respectively. Finally, we proposed a way to
construct a noun case frame dictionary by using examples of ``X no Y.''
