32. The system as in claim 30 , wherein the data storage means further stores data representing a probability of occurrence of phrases.
32. The system as in claim 30 , wherein the data storage means further stores data representing a probability of occurrence of phrases. 34. The system as in claim 32 , wherein the means for automatically using the phrase thesaurus database to construct equivalent phrases further comprises means for using the data representing a probability of occurrence of phrases to construct a probabilistic grammar.