; Now we define a lexicon and grammar
; for this application.
(deflexicon
'((part ((pliers pliers)(tires tire)
(tire tire)(blimps blimp)
(widgets widget)))
(supplier ((sears sears)(acme acme)))
(customer ((ut ut)(hp hp)(mcc mcc)))
(city ((austin austin)
(dallas dallas)
(el-paso el-paso)))
(month ((january 1)(jan 1)
(february 2)(feb 2)...))))
Note translations to internal form, e.g.,
tires --> tire, February --> 2 .
It is easy to include alternate forms such as abbreviations, slang, and special terms.