Other related work has made use of discourse connectives or discourse taggers (implicit discourse relations) to provide additional evidence of CONTINGENCY (Do et al., 2011;Gordon et al., 2011;Chiarcos, 2012;Pitler et al., 2009;Lin et al., 2010), but we do not because the results have been mixed.
these discourse taggers are trained on The Wall Street Journal (WSJ) and are unlikely to work well on our data.