However, the utilization of the ACE corpus for the task of solving event coreference is limited because this resource provides only withindocument event coreference annotations using a restricted set of event types such as LIFE, BUSI-NESS, CONFLICT, and JUSTICE.
as a second dataset, we created the EventCorefBank (ECB) corpus 6 to increase the diversity of event types and to be able to evaluate our models for both within-and cross-document event coreference resolution.