We will refer to the set of nouns that co-occur with a caseframe as the lexical expectations of the caseframe.
3 These caseframes can capture two types of contextual role information: (1) thematic roles corresponding to events (e.g, "<agent> kidnapped" or "kidnapped <patient>"), and (2) predicate-argument relations associated with both verbs and nouns (e.g., "kidnapped for <np>" or "vehicle with <np>").