(IP 
  (ADVP 
    (AD 其间))
                    
  (PU ，)
                    
  (NP-SBJ 
    (-NONE- *pro*))
                    
  (VP 
    (VE 有)
                    
    (IP-OBJ 
      (NP-SBJ 
        (QP 
          (CD 两)
                    
          (CLP 
            (M 个)))
                    
        (CP 
          (WHNP-1 
            (-NONE- *OP*))
                    
          (CP 
            (IP 
              (NP-TPC 
                (-NONE- *T*-1))
                    
              (NP-SBJ 
                (NN 体重))
                    
              (VP 
                (ADVP 
                  (AD 最))
                    
                (VP 
                  (VA 轻))))
                    
            (DEC 的)))
                    
        (NP 
          (NN 婴儿)))
                    
      (VP 
        (ADVP 
          (AD 不幸))
                    
        (VP 
          (VV 夭折))))))
arg0: 
                    两 个 *OP* *T*-1 体重 最 轻 的 婴儿 
                
argm: 
                    不幸