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:  ['A bird lays an egg', 'The egg hatches into a baby bird', 'Baby bird eats', 'Grows into an adult bird', 'The bird finds a mate', 'The pair build a nest', 'The birds lay eggs.'] 
Example Output:   Yes  

Example Input:  ['People dig up coal from the ground', 'People burn coal for heat or electricity', 'Pollution from the coal goes into the sky', 'The polluted rain becomes acid rain.', 'Clouds rain over an area', 'Coal pollution enters clouds'] 
Example Output:   No  

Example Input:  ['Sunlight is gathered by the leaves of the plant', 'Green is a color that gathers sunlight easily', 'The plant uses that glucose as energy to grow.', 'The glucose travels the plant', 'The sunlight is broken down into glucose through photosynthesis'] 
Example Output:
  No