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

Input: Consider Input:  ['Air is drawn in through the mouth', 'The air goes down the esophagus', 'The air moves into the lungs', 'The carbon dioxide is removed', 'The remaining oxygen enters the body', 'The remaining carbon dioxide is expelled through the mouth.'] 

Output:   Yes  


Input: Consider Input:  ['These plants die', 'Grass and small plants grow in an area', 'The soil becomes more fertile', 'Larger plants are able to be supported', 'The soil gains organic material', 'Trees eventually grow.'] 

Output:   No  


Input: Consider Input:  ['Put water in an ice cube tray', 'Put the ice cube tray in the freezer', 'Wait 5 to 6 hours', 'Take the ice cube tray out of the freezer', 'Bend the tray slightly to get the ice cubes out and into a drink.'] 


Output:   Yes