(LCP-LOC 
  (NP 
    (NN 食品)
                    
    (NN 标签))
                    
  (LC 上))
                    
(NP-SBJ 
  (-NONE- *pro*))
                    
(VP 
  (ADVP 
    (AD 一定))
                    
  (VP 
    (VV 要)
                    
    (VP 
      (VV 注明)
                    
      (IP-OBJ 
        (NP-SBJ 
          (PN 这))
                    
        (VP 
          (VC 是)
                    
          (NP-PRD 
            (DNP 
              (NP 
                (NN 基因)
                    
                (NN 工程))
                    
              (DEG 的))
                    
            (NP 
              (NN 产物))))
arg2: 
                    食品 标签 上          
                
arg0: 
                    *pro*          
                
argm: 
                    一定          
                
arg1: 
                    这 是 基因 工程 的 产物