(Most frequent noun sense inappropriate)
“Chair” is morphologically ambiguous –
can be either a noun or a verb. NL-Soar tries both trees,
But the syntax module rejects “chair” as a
verb (green X on left).
This causes semantic module to throw out all the
verb-classes which include a sense of the word “chair” (green X on right
through v-social)
This still leaves two noun-classes:
n-artifact and n-person.
N-artifact is more common, and is tried
first.
But v-body rejects n-artifact as a subject,
so it fails constraint.
NL-Soar then tries n-person (e.g., dept.
chair), which succeeds.