This double definition of c a s e s l o t s enables the parsing formalism to make a minimal interpretation of parts of the utterance in the c a s e of a m i s s i n g verb and thus gives suggestions for filling this gap. The QUESTION-ANSWER-INTERACTION~compo~ nent is an ATN. It has to c a t e g o r i z e an utterance as a question, a part of an answer or as communication maintaining categories s u c h as a s s u r a n c e.