(IP 
  (PP-PRP 
    (P 因为)
                    
    (IP 
      (NP-SBJ 
        (PN 她))
                    
      (VP 
        (VV 答应)
                    
        (NP-IO 
          (NN 母亲))
                    
        (IP-OBJ 
          (NP-SBJ 
            (-NONE- *pro*))
                    
          (VP 
            (PP-MNR 
              (P 以)
                    
              (NP 
                (DNP 
                  (NP 
                    (PU 「)
                    
                    (NN 国际)
                    
                    (NN 漫游)
                    
                    (PU 」))
                    
                  (DEG 的))
                    
                (NP 
                  (NN 方式))))
                    
            (DP-ADV 
              (DT 每)
                    
              (CLP 
                (M 天)))
                    
            (PP 
              (P 与)
                    
              (LCP 
                (NP 
                  (NN 家))
                    
                (LC 里)))
                    
            (VP 
              (VV 通)
                    
              (NP-OBJ 
                (NN 电话))))))))
                    
  (PU ，)
                    
  (NP-SBJ 
    (NN 母亲))
                    
  (VP 
    (ADVP 
      (AD 才))
                    
    (IP-ADV 
      (NP-SBJ 
        (-NONE- *PRO*))
                    
      (VP 
        (VV 安心)))
                    
    (VP 
      (PU 「)
                    
      (VV 放行)
                    
      (PU 」))))
arg0: 
                    母亲 
                
argm: 
                    *PRO* 安心 
                
argm: 
                    才 
                
argm: 
                    因为 她 答应 母亲 *pro* 以 「 国际 漫游 」 的 方式 每 天 与 家 里 通 电话