The availability of the standard and corpus has promoted further studies on extracting temporal information associated with events from text (Lapata and Lascarides, 2006;Mani et al., 2006;Yoshikawa et al., 2009;Mirza and Tonelli, 2014), including the TempEval challenges (Verhagen et al., 2009;Verhagen et al., 2010;UzZaman et al., 2013).
analyzing spatial properties of events has received less attention than temporal analysis, though in recent years a few studies attempt to tackle relevant problems.