Tim O’Keefe author James R Curran author Peter Ashwell author Irena Koprinska author 2013-08 text Hinrich Schuetze editor Pascale Fung editor Massimo Poesio editor Association for Computational Linguistics Sofia, Bulgaria conference publication okeefe-etal-2013-annotated https://aclanthology.org/P13-2092/ 2013-08 516 520