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:  ['The stream flows towards lower elevation', 'The rocky area has a higher elevation than the surrounding areas', 'The water forms a stream', 'A large rocky area is formed', 'The stream becomes a river', 'The river erodes the rocky area that it touches', 'Water from precipitation falls in the area', 'The river continues to flow along the same path for a long time', 'The eroded area cuts deeply into the rock.'] 
Example Output:   No  

Example Input:  ['The salt water is heated', 'As the saltwater is heated the water becomes a gas', 'The salt particles sink to the bottom of the container', 'Gaseous water is piped into another container', 'Allowed to cool', 'The salt particles are left behind in the first container', 'The second container contains fresh water.'] 
Example Output:   Yes  

Example Input:  ['The flu virus has receptors, which are like viral Velcro, on the surface of the virus particle', 'The receptors will lock onto a target cell using these chemical receptors on the surface, which docks onto the cell surface', 'The receptors  then go into the cell', 'The receptors use it like a factory', 'The receptors take it over and make it produce thousands or in some cases millions of copies of new viruses', 'The copies come streaming out of the cell', 'The copies infect other cells to make more viruses, or they escape from the body and infect a new victim'] 
Example Output:
  Yes