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:
 ['Humans are born as babies', 'Babies become infants', 'Infants become children', 'Children learn skills', 'Children become teenagers', 'Teenagers undergo puberty', 'Teenagers become adults', 'Adults have children', 'Adults become elderly', 'Elderly humans die.'] 

Ex Output:
  Yes  


Ex Input:
 ['The reflector in the flashlight directs the lamp's beam', 'The flashlight is turned on', 'A circuit is completed between the batteries and the lamp', 'Batteries are put in a flashlight', 'The beam is no longer visible.', 'A straight beam of light is generated', 'The lamp in the flashlight begins to glow', 'Two contact strips touch one another', 'The flashlight is turned off', 'The circuit is broken'] 

Ex Output:
  No  


Ex Input:
 ['Solution caves are formed in limestone and similar rocks by the action of water', 'After a rain, water seeps into cracks and pores of soil and rock', 'The water percolates beneath the land surface', 'Some of the water reaches a zone where all the cracks and pores in the rock are already filled with water', 'Rainwater absorbs some carbon dioxide as it passes through the atmosphere and even more as it drains through soil and decaying vegetation', 'The water combines chemically with the carbon dioxide', 'A weak carbonic acid solution is formed', 'This acid slowly dissolves calcite, forms solution cavities, and excavates passageways'] 

Ex Output:

  Yes