First, to gain insights into the differences between the two resolvers, we examine those candidate event mentions that are correctly handled by one model but not the other (Section 6.4.1).
we consider a candidate event mention e correctly handled if (1) e is a correctly resolved anaphoric event mention; (2) e is an unresolved singleton event mention; or (3) e is an unresolved non-event mention (i.e., not a true event  mention).