You need to answer the question 'Are the given steps in order?', given a set of steps describing a process. Your answer must be either Yes or No. If the answer is No, that means the steps are out of order and do not make sense in the order they are in. If the answer is Yes, that means the steps are in order and make sense in the order that they are in. A set of steps are not in order if the steps reference information that is introduced in a later step

Ex Input:
 ['People dig up coal from the ground', 'People burn coal for heat or electricity', 'Pollution from the coal goes into the sky', 'The polluted rain becomes acid rain.', 'Clouds rain over an area', 'Coal pollution enters clouds'] 

Ex Output:
  No  


Ex Input:
 ['You take a tray', 'Add water into the tray', 'You insert the tray into a freezer', 'The water molecules begin to slow down', 'The water becomes ice', 'The ice cubes are ready.'] 

Ex Output:
  Yes  


Ex Input:
 ['The power is turned on', 'In about 1.5-2 hours, the dishes are clean', 'A detergent is added to the detergent dispenser', 'Dirty dishes are rinsed', 'The dishwasher is closed', 'Placed into the dishwasher'] 

Ex Output:

  No