By looking at the two bottom blocks, we observe that our parser has slightly better accuracies than recent projective parsers, with comparable speed levels (with the exception of the highly optimized vine cascade approach of Rush and Petrov, 2012 Martins et al. (2010<cite> Martins et al. ( , 2011</cite> , , Rush and Petrov (2012) , Zhang and McDonald (2012) .