(IP-OBJ 
  (NP-SBJ 
    (QP 
      (CD 多少))
                    
    (NP 
      (NN 母亲)))
                    
  (PU ，)
                    
  (VP 
    (PP-BNF 
      (P 为)
                    
      (NP 
        (NP 
          (PN 他们))
                    
        (CP 
          (WHNP-2 
            (-NONE- *OP*))
                    
          (CP 
            (IP 
              (NP-SBJ 
                (-NONE- *T*-2))
                    
              (VP 
                (VV 囚禁)
                    
                (PP-LOC 
                  (P 在)
                    
                  (LCP 
                    (NP-PN 
                      (NR 绿岛))
                    
                    (LC 上)))))
                    
            (DEC 的)))
                    
        (NP 
          (NN 孩子))))
                    
    (PU ，)
                    
    (NP-TMP 
      (ADJP 
        (JJ 长))
                    
      (NP 
        (NN 夜)))
                    
    (VP 
      (VV 哭泣))))
arg0: 
                    多少 母亲 
                
argm: 
                    长 夜 
                
argm: 
                    为 他们 *OP* *T*-2 囚禁 在 绿岛 上 的 孩子