(IP 
  (NP-SBJ 
    (CP-APP 
      (IP 
        (NP-SBJ 
          (-NONE- *PRO*))
                    
        (VP 
          (ADVP 
            (AD 自然))
                    
          (VP 
            (VV 妊娠)
                    
            (NP-OBJ 
              (QP 
                (CD 六)
                    
                (CLP 
                  (M 胞)))
                    
              (NP 
                (NN 胎))))))
                    
      (DEC 的))
                    
    (NP 
      (NN 机率)))
                    
  (VP 
    (VV 在)
                    
    (QP-OBJ 
      (CD 四千亿分之一))))
arg0: 
                    *PRO* 
                
arg1: 
                    六 胞 胎 
                
argm: 
                    自然 
                

(IP-HLN 
  (NP-TPC 
    (CP 
      (WHNP-2 
        (-NONE- *OP*))
                    
      (IP 
        (QP-TPC 
          (NP-PN 
            (NR 中国))
                    
          (QP 
            (OD 首)
                    
            (CLP 
              (M 例)))
                    
          (CP 
            (WHNP-1 
              (-NONE- *OP*))
                    
            (IP 
              (NP-SBJ 
                (-NONE- *T*-1))
                    
              (VP 
                (ADVP 
                  (AD 自然))
                    
                (VP 
                  (VV 妊娠)))))
                    
          (QP 
            (CD 六)
                    
            (CLP 
              (M 胞)))
                    
          (NP 
            (NN 胎)))
                    
        (NP-SBJ 
          (-NONE- *T*-2))
                    
        (VP 
          (VV 存活))))
                    
    (NP 
      (NN 婴儿)))
                    
  (NP-SBJ 
    (NN 健康)
                    
    (NN 状况))
                    
  (VP 
    (VA 良好)))
arg0: 
                    *T*-1 
                
argm: 
                    自然 
                

(IP 
  (NP-SBJ 
    (CP 
      (WHNP-1 
        (-NONE- *OP*))
                    
      (CP 
        (IP 
          (NP-SBJ-2 
            (-NONE- *T*-1))
                    
          (VP 
            (PP-LGS 
              (P 由)
                    
              (NP 
                (NP-APP 
                  (DNP 
                    (QP 
                      (CD 三十三)
                    
                      (CLP 
                        (M 岁)))
                    
                    (DEG 的))
                    
                  (NP 
                    (NN 产妇)))
                    
                (NP-PN 
                  (NR 姚红))))
                    
            (VP 
              (VP 
                (ADVP 
                  (AD 自然))
                    
                (VP 
                  (VV 妊娠)
                    
                  (NP-OBJ 
                    (-NONE- *-2))))
                    
              (VP 
                (VV 出生)
                    
                (NP-OBJ 
                  (-NONE- *-2))))))
                    
        (DEC 的)))
                    
    (QP 
      (NP-PN 
        (NR 中国))
                    
      (QP 
        (OD 首)
                    
        (CLP 
          (M 例))))
                    
    (QP 
      (CD 六)
                    
      (CLP 
        (M 胞)))
                    
    (NP 
      (NN 胎)))
                    
  (VP 
    (NP-TMP 
      (NT 目前))
                    
    (VP 
      (ADVP 
        (AD 先后))
                    
      (VP 
        (VE 有)
                    
        (IP-OBJ 
          (QP-SBJ 
            (CD 两)
                    
            (CLP 
              (M 名)))
                    
          (VP 
            (VV 死亡)))))))
arg0: 
                    由 三十三 岁 的 产妇 姚红 
                
arg1: 
                    *-2 
                
argm: 
                    自然