(IP 
  (NP-SBJ 
    (PN 他))
                    
  (VP 
    (VV 确信)
                    
    (PU ，)
                    
    (IP-OBJ 
      (NP-SBJ 
        (NP-PN-APP 
          (NR 加)
                    
          (PU 、)
                    
          (NR 中))
                    
        (QP 
          (CD 两))
                    
        (NP 
          (NN 国)))
                    
      (VP 
        (VV 可以)
                    
        (VP 
          (VV 成为)
                    
          (NP-OBJ 
            (CP 
              (WHNP-1 
                (-NONE- *OP*))
                    
              (CP 
                (IP 
                  (NP-SBJ 
                    (-NONE- *T*-1))
                    
                  (VP 
                    (ADVP 
                      (AD 很))
                    
                    (VP 
                      (VA 好))))
                    
                (DEC 的)))
                    
            (NP 
              (NN 合作)
                    
              (NN 伙伴))))))))
arg0: 
                    他 
                
arg1: 
                    加 、 中 两 国 可以 成为 *OP* *T*-1 很 好 的 合作 伙伴