ISO-TimeML is used in several corpora, including the TimeBank (Pustejovsky et al., 2003b), WikiWars (Mazur and Dale, 2010), TimeN (Llorens et al., 2012), and the Temp-Eval shared tasks (Verhagen et al., 2007;Verhagen et al., 2010;UzZaman et al., 2013).
the ISO-TimeML schema has a few drawbacks.