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:  ['Food is chewed and mixed with saliva (spit)', 'Acid in the stomach breaks the food down further', 'Food travels into the large intestine', 'Nutrients from food are absorbed into the blood stream', 'Food travels into the stomach', 'Food travels down the esophagus (throat)', 'The waste is eventually removed from the body.', 'Food is put into mouth', 'Most of the remaining material is now waste', 'Food travels into the small intestine'] 
Example Output:   No  

Example Input:  ['Composition of blood is regulated', 'Volume of water in blood is kept constant', 'Kidneys filter waste out of blood', 'Kidneys stimulate the making of red blood cells', 'Kidneys help regulate blood pressure', 'Calcium levels are maintained.', 'PH is kept at a constant level'] 
Example Output:   No  

Example Input:  ['The rock is broken down into smaller pieces', 'Erosion begins.', 'The roots of the growing plants start to break up the rock', 'The plant acids dissolve the rock', 'Plants start growing on or near the rocks'] 
Example Output:
  No