(IP 
  (PP-PRP 
    (P 为了)
                    
    (IP 
      (NP-SBJ 
        (-NONE- *PRO*))
                    
      (VP 
        (VV 欢迎)
                    
        (NP-OBJ 
          (NN 来客)))))
                    
  (PU ，)
                    
  (NP-SBJ 
    (PN 他们))
                    
  (VP 
    (ADVP 
      (AD 早))
                    
    (ADVP 
      (AD 已))
                    
    (PP-LOC 
      (P 在)
                    
      (NP 
        (NN 餐厅)))
                    
    (VP 
      (VV 订好)
                    
      (NP-OBJ 
        (QP 
          (CD 一)
                    
          (CLP 
            (ADJP 
              (JJ 大))
                    
            (CLP 
              (M 桌))))
                    
        (NP 
          (NN 海鲜)
                    
          (NN 大餐))))))
arg0: 
                    他们 
                
arg1: 
                    一 大 桌 海鲜 大餐 
                
argm: 
                    在 餐厅 
                
argm: 
                    已 
                
argm: 
                    早 
                
argm: 
                    为了 *PRO* 欢迎 来客