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PropBank is a corpus in which the arguments of each predicate are annotated with their semantic roles in relation to the predicate (Palmer et al., 2005). Currently, all the PropBank annotations are done on top of the phrase structure annotation of the Penn TreeBank (Marcus et al., 1993). In addition to semantic role annotation, PropBank annotation requires the choice of a sense id (also known as a ‘frameset’or ‘roleset’id) for each predicate. Thus, for each verb in every tree (representing the phrase structure of the corresponding sentence), we create a PropBank instance that consists of the sense id of the predicate (eg, run. 02) and its arguments labeled with semantic roles.