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:  ['Eventually there is nothing living in the water and it is unusable', 'The plants and animals do not reproduce very well', 'The pollution negatively affects the health of plants and animals', 'The quality of water gets worse and worse as there are no plants or animals to clean it', 'The pollution negatively affects the water quality', 'The plants and animals have shorter, less healthy lives', 'Pollution enters natural water sources such as rivers and lakes', 'The number of plants and animals decreases over time'] 

Output:   No  


Input: Consider 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'] 

Output:   No  


Input: Consider Input:  ['Acid and enzyme in the stomach break the food down', 'Fluid and enzymes from liver and pancreas pumped into small intestine', 'Unused materials passed into large intestine to become fecal matter.', 'An enzyme in saliva begins to break down carbohydrates', 'Food then pumped into small intestine', 'Food is squeezed down the esophagus when you swallow', 'Releases nutrients', 'Nutrients absorbed into blood stream', 'Help break food into smallest molecules', 'Nutrients pass through wall of small intestine'] 


Output:   No