2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/150982This paper provides a model theoretic semantics to feature terms augmented with set descriptions. We provide constraints to specify HPSG style set descriptions, fixed cardinality set descriptions, set-membership constraints, restricted universal role quantifications, set union, intersection, subset and disjointness. A sound, complete and terminating consistency checking procedure is provided to determine the consistency of any given term in the logic. It is shown that determining consistency of terms is a NP-complete problem.8 pages, epsf.sty, leqno.sty, LaTeX, ACL'94Computation and Languagetext