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:
 ['Air is pulled into the lungs', 'Oxygen moves from the lungs into the bloodstream', 'Air is pushed through the vocal chords', 'A person talks', 'Other air is pushed out of the lungs into the environment.'] 

Ex Output:
  Yes  


Ex Input:
 ['Give the cells owner a flow of electricity.', 'Adding an external circuit allows the exchange to continue', 'This produces an electric field that allows electrons to flow from negative to positve', 'A photovoltaic cell is created with two layers of semiconductor material', 'Sunlight enters the cell', 'Energy from sunlight knocks electrons loose in both fields', 'The top layer are &#x27;doped&#x27; with impurities to allow a negative charge', 'The bottom layer are &#x27;doped&#x27; to allow for a positive charge', 'This prevents the flow of electrons from negative to positive'] 

Ex Output:
  No  


Ex Input:
 ['An egg is laid by a mother bird', 'The bird is able to fly', 'A baby bird forms within the egg if it is fertilized', 'The baby bird begins pecking out of the egg', 'The bird is able to leave the nest and find food', 'The bird is able to reproduce.', 'The baby bird is unable to fly to get food', 'The mother bird must feed the baby bird food', 'The bird grows stronger and grows wings'] 

Ex Output:

  No