As mentioned above, we start with an event coreference resolver that assumes that all the six upstream components are error-free (see row 1 of Table 1 for its performance), and then replace each oracle component with its system (i.e., machinelearned) counterpart one after the other (rows 2--7 of Table 1).
the results in the last row of Table 1 correspond to the performance of an end-to-end event coreference resolver that relies solely on system components.