Figure 2 A processor session with ungrammatical input sentences

Sentence:  Jim will run last week
Response:  I don't understand, 'will' means future
           time, but 'last week' means past time

Sentence:  Jim will ran in the race
Response:  I don't understand, 'will' and that form
           of 'run' aren't used together

Sentence:  Jim are running in the race
Response:  I don't understand, 'are', 'Jim', and that
           form of 'run' don't agree in number