PDTB 3.0 annotates discourse relations — including causal, temporal, and contingency senses — across the full Penn Treebank WSJ corpus using both explicit connectives and implicit relation spans.
@article{webber:2019,title={The Penn Discourse Treebank 3.0 Annotation Manual},author={Webber, Bonnie and Prasad, Rashmi and Lee, Alan and Joshi, Aravind},year=2019,journal={Philadelphia, University of Pennsylvania},volume={35},pages={108}}