The dataset is available via Language Data Consortium (LDC) .
Semantic role label of the PropBank is predicate-argument relation. Each sentence in the text of the original Penn Treebank is annotated with a set of semantic roles defined for each verb. For example,
Frameset accept.01 "take willingly"
Arg1: Thing accepted
Ex: [Arg0 He][ArgM-MOD would][ArgM-NEG n't] accept [Arg1 anything of value][Arg2 from those he was writing about]. (wsj_0186)
Hand-checked syntactic parse trees are available since annotation was performed on the Penn Treebank corpus.