The set of semantic roles may receive either a predicate dependent or a predicate independent characterization. When selecting a set of semantic roles, it is necessary to decide whether the set should or should not be chosen independently of the type of verbs involved. [...] other works take a predicate dependent approach, identifying each of the possible semantic roles with respect to a verb or class of verbs. This widely used approach is clearly appealing since semantic roles, by labelling relations of arguments to verbs, are not truly independent of verbs.
- Levin (2004), a pag.322-323