Given a list of steps and an additional step, determine where the step fits into the original list of steps. A correct answer, correctly places the given step into the set of steps so that it creates a new plausible set of steps. Output must be formatted as 'After step n', where n is the step number after which the given additional step is to be inserted.

Q: Steps: (1) Coal is loaded into the firebox (2) The boiler produces steam under high pressure (3) The steam generated in the boiler flows down into a cylinder (4) Just ahead of the wheels, pushing a tight-fitting plunger, the piston (5) As the piston pushes, the crank and connecting rod turn the locomotive&#x27;s wheels and power the train along (6) An outlet valve opens and the piston pushes the steam back through the cylinder and out up the locomotive&#x27;s chimney  
Where does the following step fit into the given list of steps: The piston is connected to one or more of the locomotive&#x27;s wheels through a kind of arm-elbow-shoulder joint called a crank and connecting rod 

A:  After step 4. 
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Q: Steps: (1) The human body takes a breath inward (2) Air is transported to the lungs (3) Air reaches the alveoli, the smallest air sacs in the lungs (4) In the alveoli, air passes into the blood within small capillaries (5) The gaseous oxygen in the air dissolves into the capillary blood (6) The dissolved oxygen is picked-up by red blood cells (7) Red blood cells circulate throughout the body and reach the various tissues (8) Within small capillaries, the heme release the oxygen (9) The oxygen can then reach the cells within the tissue  
Where does the following step fit into the given list of steps: The red blood cells bind the oxygen via a protein called heme 

A:  After step 6. 
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Q: Steps: (1) Items are collected (2) The items are sorted (3) Trash is removed from everything else (4) Goes to a landfill (5) The items go into a baler machine for each kind of material (6) The bales are shipped to manufacturers to use to make products.  
Where does the following step fit into the given list of steps: They come out as bales 

A:
 After step 5. 
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