(IP 
  (NP-SBJ 
    (DP 
      (DT 这)
                    
      (CLP 
        (M 个)))
                    
    (CP 
      (WHNP-1 
        (-NONE- *OP*))
                    
      (CP 
        (IP 
          (NP-TPC 
            (-NONE- *T*-1))
                    
          (IP 
            (NP-SBJ 
              (NN 面积))
                    
            (VP 
              (QP-PRD 
                (ADVP 
                  (AD 仅))
                    
                (QP 
                  (CD 十六．二)
                    
                  (CLP 
                    (M 平方公里))))))
                    
          (PU ，)
                    
          (IP 
            (NP-SBJ 
              (NN 人口))
                    
            (VP 
              (ADVP 
                (AD 只))
                    
              (ADVP 
                (AD 约))
                    
              (NP-PRD 
                (QP 
                  (CD 三千))
                    
                (NP 
                  (NN 人))))))
                    
        (DEC 的)))
                    
    (NP 
      (NN 岛屿)))
                    
  (PU ，)
                    
  (VP 
    (PP-PRP 
      (P 由於)
                    
      (IP 
        (NP-SBJ 
          (-NONE- *PRO*))
                    
        (VP 
          (VP 
            (VV 身处)
                    
            (NP-OBJ 
              (NN 外海)))
                    
          (PU ，)
                    
          (VP 
            (VV 与世隔绝)))))
                    
    (PU ，)
                    
    (PP-TMP 
      (P 自)
                    
      (NP 
        (ADJP 
          (JJ 日据))
                    
        (NP 
          (NN 时期))))
                    
    (ADVP 
      (AD 即))
                    
    (VP 
      (VC 为)
                    
      (NP-PRD 
        (CP 
          (WHNP-2 
            (-NONE- *OP*))
                    
          (CP 
            (IP 
              (NP-SBJ 
                (-NONE- *pro*))
                    
              (VP 
                (NP-LOC 
                  (-NONE- *T*-2))
                    
                (VP 
                  (VV 囚禁)
                    
                  (NP-OBJ 
                    (NN 犯人)))))
                    
            (DEC 之)))
                    
        (NP 
          (NN 所))))))
arg0: 
                    *PRO*