However, these were developed for sentence-level interpretation and only ensure within sentence consistency of labels (Punyakanok et al., 2004;Toutanova et al., 2005;Lewis et al., 2015), limiting their ability to generate coherent characterizations of the process overall.
the same process participant may appear in text at different syntactic positions, with different wording, and with different verbs, which makes it hard to extract globally consistent descriptions.