i.e., event extraction and temporal relation classification, and they also assume that gold events are given when training the relation classifier (Verhagen et al., 2007(Verhagen et al., , 2010UzZaman et al., 2013;Ning et al., 2017;Meng and Rumshisky, 2018).
they built end-toend systems that extract events first and then predict temporal relations between them (Fig.