The rows in the table represent the models from Bikel and Chiang (2000), Levy and Manning (2003) , Xiong et al. (2005) , Bikel (2004), Chiang and Bikel (2002) , the SVM model from <cite>Wang et al. (2006)</cite> and the ensemble system from <cite>Wang et al. (2006)</cite> , and the parser of this paper, respectively.