(IP 
  (ADVP 
    (AD 因此))
                    
  (NP-PN-SBJ 
    (NR 东南亚))
                    
  (VP 
    (VP 
      (ADVP 
        (AD 已))
                    
      (VP 
        (VC 是)
                    
        (NP-PRD 
          (DNP 
            (NP-PN 
              (NR 台湾))
                    
            (DEG 的))
                    
          (ADJP 
            (QP 
              (OD 第四))
                    
            (ADJP 
              (JJ 大)))
                    
          (NP 
            (NN 外销)
                    
            (NN 市场)))))
                    
    (PU ，)
                    
    (VP 
      (VV 次於)
                    
      (NP-OBJ 
        (NP-PN 
          (NR 美国))
                    
        (PU 、)
                    
        (NP 
          (NN 大陆))
                    
        (PU 、)
                    
        (CC 和)
                    
        (NP-PN 
          (NR 欧盟))))))
arg0: 
                    东南亚 
                
arg1: 
                    美国 、 大陆 、 和 欧盟