We have tried various ways to detect the "T" at the end of the
input of the verb "IST". In the InStantiate module, we were able
to test first for a "pov" of external input and then for the value
of the OutBuffer rightmost "b16" value. Thus we were able to detect
the ending "T" on the verb. Immediately we face the problem of how
retroactively to change the default number of the subject noun from
"2" for plural to "1" for singular.
Changing anything retroactively is no small matter in the Wotan
German AI, because other words may have intervened between the
alterand subject-noun and the determinant verb. We have previously
worked on assigning "tqv" and "seq" values retroactively from
a direct object back to a verb, so we do have some experience here.
http://www.scn.org/~mentifex/DeKiUser.html