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

Example Input:  ['Bloodstream', 'Sugar enters the body', 'Insulin lower sugar levels', 'Bloo sugar goes back to normal.', 'The pancreas'] 
Example Output:   No  

Example Input:  ['Air is pushed through the vocal chords', 'Other air is pushed out of the lungs into the environment.', 'Oxygen moves from the lungs into the bloodstream', 'A person talks', 'Air is pulled into the lungs'] 
Example Output:   No  

Example Input:  ['The liver takes in blood from the rest of the body', 'The liver uses enzymes to clean the blood', 'The cleaned blood is expelled', 'The liver creates bile from the items filtered', 'The liver takes energy and stores it as glycogen', 'The bile is sent to the intestines.'] 
Example Output:
  Yes