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:
 ['Limestone is located under the soil', 'Rain picks up carbon dioxide as it falls to earth', 'The rain falls on the soil over the limestone', 'The carbon dioxide in the rain washes through the soil', 'The carbon dioxide turns into acid', 'The acid in the rain gets to the limestone below the soil', 'The acid dissolves the limestone', 'Acid continues to erode the limestone with more rain over time', 'The eroded limestone sometimes forms caves.'] 

Ex Output:
  Yes  


Ex Input:
 ['The lighter items float on the top and in convection cycles', 'Sediment becomes loose from the rest of the soil', 'The sediment gets dumped through tributaries into lakes and the ocean', 'The sediment keeps moving around the world in convection currents.', 'The heavy items sink to the bottom', 'The sediment rolls down hill towards a river', 'As the river flows the sediment is moved'] 

Ex Output:
  No  


Ex Input:
 ['Plates on the Earth&#x27;s crust move slowly past each other', 'As the plates move, they exert a great force', 'When the force is large enough, the crust breaks', 'The stress is released as energy', 'The energy moves through the Earth in the form of waves', 'We feel the earthquake'] 

Ex Output:

  Yes