(IP 
  (IP-SBJ 
    (NP-SBJ 
      (-NONE- *PRO*))
                    
    (VP 
      (VV 发展)
                    
      (NP-OBJ 
        (NP-PN 
          (NR 中)
                    
          (NR 美))
                    
        (ADJP 
          (JJ 友好))
                    
        (NP 
          (NN 关系)))))
                    
  (VP 
    (VP 
      (VC 是)
                    
      (NP-PRD 
        (DNP 
          (NP 
            (NP 
              (QP 
                (CD 两))
                    
              (NP 
                (NN 国)))
                    
            (NP 
              (NN 人民)))
                    
          (DEG 的))
                    
        (ADJP 
          (JJ 共同))
                    
        (NP 
          (NN 愿望))))
                    
    (PU ，)
                    
    (VP 
      (VC 是)
                    
      (NP-PRD 
        (CP 
          (WHNP-1 
            (-NONE- *OP*))
                    
          (CP 
            (IP 
              (NP-SBJ 
                (-NONE- *T*-1))
                    
              (VP 
                (ADVP 
                  (AD 不))
                    
                (VP 
                  (VV 可)
                    
                  (VP 
                    (VV 阻挡)))))
                    
            (DEC 的)))
                    
        (NP 
          (NN 历史)
                    
          (NN 潮流))))))
arg1: 
                    *T*-1 
                
argm: 
                    不