Refining the Meaning of Sense Labels in PDTB: “Concession” Livio Robaldo author Eleni Miltsakaki author Jerry R Hobbs author 2008 text Semantics in Text Processing. STEP 2008 Conference Proceedings Johan Bos editor Rodolfo Delmonte editor College Publications conference publication robaldo-etal-2008-refining https://aclanthology.org/W08-2217/ 2008 207 219