( 
  (IP 
    (NP-SBJ 
      (NN 民兵))
                    
    (VP 
      (VC 是)
                    
      (NP-PRD 
        (CP 
          (WHNP-1 
            (-NONE- *OP*))
                    
          (CP 
            (IP 
              (NP-SBJ 
                (-NONE- *T*-1))
                    
              (VP 
                (VP 
                  (VV 保卫)
                    
                  (NP-OBJ 
                    (NN 国家)
                    
                    (NN 安全)))
                    
                (PU 、)
                    
                (VP 
                  (VV 维护)
                    
                  (NP-OBJ 
                    (NN 祖国)
                    
                    (NN 统一)))))
                    
            (DEC 的)))
                    
        (QP 
          (CD 一)
                    
          (CLP 
            (M 支)))
                    
        (ADJP 
          (JJ 重要))
                    
        (NP 
          (NN 力量))))))
arg0:  (*T*-1)->(一支重要力量)