(IP 
  (NP-SBJ 
    (CP 
      (WHNP-1 
        (-NONE- *OP*))
                    
      (CP 
        (IP 
          (NP-SBJ 
            (-NONE- *T*-1))
                    
          (VP 
            (VV 讲求)
                    
            (NP-OBJ 
              (NN 速效))))
                    
        (DEC 的)))
                    
    (NP 
      (NN 台湾人)))
                    
  (VP 
    (PP-TMP 
      (P 在)
                    
      (LCP 
        (IP 
          (NP-SBJ 
            (NN 桧木林))
                    
          (VP 
            (VV 伐除)))
                    
        (LC 後)))
                    
    (PU ，)
                    
    (ADVP 
      (AD 通常))
                    
    (ADVP 
      (AD 都))
                    
    (VP 
      (VV 栽种)
                    
      (NP-OBJ 
        (CP 
          (WHNP-2 
            (-NONE- *OP*))
                    
          (CP 
            (IP 
              (NP-SBJ 
                (-NONE- *T*-2))
                    
              (VP 
                (QP-ADV 
                  (CD 二十)
                    
                  (CLP 
                    (M 年)))
                    
                (ADVP 
                  (AD 即))
                    
                (VP 
                  (VV 可)
                    
                  (VP 
                    (VV 砍伐)))))
                    
            (DEC 的)))
                    
        (NP 
          (NN 柳杉))))))
arg1: 
                    *T*-2 
                
argm: 
                    即 
                
argm: 
                    二十 年