... and ex-tend it by adding two different types of information: lexical co-occurrence information and qualia-structure information. Co-occurrence information for a lexicalitem describes other lexical ... or-ganization from those used in the Penman grammar,Nigel: they also contain referential information, lexicalco-occurrence information, and so on. They are orga-nized to support the derivation ofSPL structures ... realization.The lexico-grammatical informationis maintained atthree linguistic ranks: the discourse, proposition, andconstituent ranks. Despite its name, the discourse-rank information is used by the...