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:  ['Coal is put in a coal-fired steam station', 'Water is put in pipes in the coal-fired steam station', 'The coal is crushed', 'The coal is moved into a boiler along with hot air', 'The water is moving through pipes in the boiler', 'The steam from the water is blown against a turning mechanism', 'The force of the steam makes the mechanism turn', 'The mechanism generates electricity.'] 

Output:   Yes  


Input: Consider Input:  ['Bats fly through an area', 'The bat makes sounds with their mouth or nose', 'The sound waves travel away from the bat', 'The sound waves hit objects', 'The sound waves bounce off the objects back towards the bat', 'The bat hears the sound waves echoing off the objects', 'The bat knows where the objects are because of where the sound echoed from', 'The bat doesn't hurt itself by hitting the objects.'] 

Output:   Yes  


Input: Consider Input:  ['Volume of water in blood is kept constant', 'Composition of blood is regulated', 'Kidneys filter waste out of blood', 'Calcium levels are maintained.', 'PH is kept at a constant level', 'Kidneys help regulate blood pressure', 'Kidneys stimulate the making of red blood cells'] 


Output:   No