[lkb] Arboretum

Hi,
   I'd like to implement arboretum (robust parsing) in my Lisp parsing
program. When I type  (lkb::grammar-check "dogs barks"), the message
shows "The sentence is grammatical". Why not error message such as
"There is a verb which does not agree with its subject." Hopefully
someone may help me.

Kindly regards,
Halizah
Univ. of Otago
New Zealand