These include medium-scale multilingual datasets such as ONTONOTES (Pradhan et al., 2007;Weischedel et al., 2011), which led to the most recent evaluation campaigns, in particular CONLL (Pradhan et al., 2012, and are used in most current research (Björkelund and Kuhn, 2014;Martschat and Strube, 2015;Clark and Manning, 2016;Lee et al., 2017).
there are still many languages and domains for which no such resources are available, and even for English much larger corpora than ONTONOTES will eventually be required.