Predicate-Argument Model (SVO): A simple approach, used by Yangarber et al. (2000) , Yangarber (2003) and , is to use subject-verb-object tuples from the dependency parse as extraction patterns. This model can identify information which is expressed using simple predicate-argument constructions such as the relation between Acme and Smith 1 The formalism used for representing dependency patterns is similar to the one introduced by <cite>Sudo et al. (2003)</cite> .