VerbNet Parser
A Class-Based Verb Lexicon
VerbNet provides a hierarchical, domain-independent broad-coverage verb lexicon with mappings to other lexical resources.
329 verb classes and over 270 subclasses
6,791 unique verb senses with corresponding thematic roles and entailed open-domain semantic predicates.
Over 150 open-domain semantic predicates
Predicates provide shared event semantics across classes grounded in a fixed set of semantic primitives.
2,168 syntactic frames with associated semantic predicates
Each class contains a set of syntactic descriptions, or syntactic frames, depicting the possible surface realizations of argument structures.
Linked to WordNet, PropBank, and FrameNet
WordNet
A lexicon that describes semantic relationships (such as synonymy and hyperonymy) between individual words.
PropBank
A corpus of one million words of English text, annotated with argument role labels for verbs; and a lexicon defining those argument roles on a per-verb basis.
FrameNet
A lexicon based on frame semantics.