Detecting events in an automatic way is challenging, not only because an event can be expressed in different words, but also because a word may express a variety of events in different contexts.
the frequent utilization of common words, ambiguous words and pronouns in event mentions makes them harder to detect: 1) Generalitytaken home <Transport> Ambiguity 1campaign in Iraq <Attack> Ambiguity 2political campaign <Elect> Coreference -Either its bad or good <Marry> A promising solution to this challenge is through semantic understanding.