( 
  (IP 
    (ADVP 
      (AD 然而))
                    
    (PU ，)
                    
    (NP-SBJ 
      (CP 
        (WHNP-1 
          (-NONE- *OP*))
                    
        (CP 
          (IP 
            (NP-SBJ 
              (-NONE- *T*-1))
                    
            (VP 
              (VV 卷入)
                    
              (NP-OBJ 
                (NN 冲突))))
                    
          (DEC 的)))
                    
      (DP 
        (DT 各))
                    
      (NP 
        (NN 国)))
                    
    (VP 
      (PP-PRP 
        (P 为)
                    
        (IP 
          (NP-SBJ 
            (-NONE- *PRO*))
                    
          (VP 
            (VV 维护)
                    
            (NP-OBJ 
              (NP 
                (PN 其))
                    
              (NP 
                (NN 政治)
                    
                (NN 经济))
                    
              (NP 
                (NN 利益))))))
                    
      (VP 
        (MSP 而)
                    
        (VP 
          (ADVP 
            (AD 不))
                    
          (VP 
            (VV 肯)
                    
            (VP 
              (VV 罢手))))))))
argM:  然而 
arg0:  *OP* (*T*-1)->(各国) 卷入 冲突 的 各 国 
argM:  为 *PRO* 维护 其 政治 经济 利益