(IP 
  (PP-PRP 
    (P 由於)
                    
    (NP 
      (CP-APP 
        (IP 
          (NP-SBJ 
            (-NONE- *pro*))
                    
          (VP 
            (VV 推行)
                    
            (NP-OBJ 
              (QP 
                (CD 多)
                    
                (CLP 
                  (M 项)))
                    
              (NP 
                (NN 措施)))))
                    
        (DEC 的))
                    
      (NP 
        (NN 成果))))
                    
  (PU ，)
                    
  (NP-SBJ 
    (CP 
      (WHPP-1 
        (-NONE- *OP*))
                    
      (CP 
        (IP 
          (NP-SBJ 
            (-NONE- *pro*))
                    
          (VP 
            (PP-TMP 
              (-NONE- *T*-1))
                    
            (VP 
              (VV 轮候)
                    
              (NP-OBJ 
                (NN 出租)
                    
                (NN 公屋)))))
                    
        (DEC 的)))
                    
    (ADJP 
      (JJ 平均))
                    
    (NP 
      (NN 时间)))
                    
  (VP 
    (ADVP 
      (AD 已))
                    
    (ADVP 
      (AD 逐渐))
                    
    (PP-DIR 
      (P 由)
                    
      (QP 
        (CD 九)
                    
        (CLP 
          (M 年))))
                    
    (VP 
      (VRD 
        (VV 缩短)
                    
        (VV 至))
                    
      (QP-OBJ 
        (DNP 
          (NP 
            (NT 现时))
                    
          (DEG 的))
                    
        (QP 
          (QP 
            (CD 六)
                    
            (CLP 
              (M 年)))
                    
          (QP 
            (CD 半)))))))
arg0: 
                    *pro* 
                
arg1: 
                    出租 公屋