... variety of thematicroles. Zapirain et al. (2008) evaluated PropBankARG tags and VerbNetthematic roles in a state -of- the- art SRL system, and concluded that PropBankARG tags achieved a more ... Proceedings of the 47th Annual Meeting of the ACL and the 4th IJCNLP of the AFNLP, pages 19–27,Suntec, Singapore, 2-7 August 2009.c2009 ACL and AFNLP A Comparative Study on Generalization of ... seman-tic representations, SRL has attracted much at-tention from researchers into various NLP appli-cations including question answering (Narayanan and Harabagiu, 2004; Shen and Lapata, 2007;buy.v...