(NP-SBJ 
  (NN 儿童)
                    
  (NN 安全))
                    
(VP 
  (ADVP 
    (AD 又))
                    
  (VP 
    (VV 亮起)
                    
    (NP-OBJ 
      (NN 红灯)))))
arg0: 
                    儿童 安全          
                
argm: 
                    又          
                
arg1: 
                    红灯