How many days after the United Nations Security Council met did  United Nations Security Council Resolution 54 go into effect?
return the  United  Nations Security  Council met ;return United  Nations Security  Council Resolution 54 go into effect ;return when  was  #1 ;return when  was  #2 ;return difference of #4 and  #3 in  days
['select', 'select', 'project', 'project', 'arithmetic']