For example, nsp( /NR), tsp(µÈ /NN) and psp(NP 1 ) are consistent while nsp( /JJ) and nsp(µÈ /NN) are not consistent.
as shown in Figure 4, we annotate each node n of phrasal nodes labeled T with two attributes: node span and subtree span; besides, we annotate phrasal span to the parts covered by phrasal nodes in each subtree rooted at n. The three types of spans are defined as follows: Definition 1 Given a node n, its node span nsp(n) is the consecutive target word sequence aligned with the node n. Take the node " /NR" in Figure 4 for example, nsp( /NR)={7-8}, which corresponds to the target words "in" and "asia".