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) A larva is born (2) The caterpillar eats constantly until it grows bigger (3) The caterpillar starts to form a cocoon around itself (4) After some time the cocoon hatches (5) And a butterfly is born.  
Where does the following step fit into the given list of steps: The caterpillar becomes a pupa 

A:  After step 3. 
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Q: Steps: (1) A star burns in space (2) Eventually it burns all its hydrogen (3) Becomes a red giant (4) Once the red giant burns itself out (5) The core of the star collapses (6) The gasses will start to disperse (7) A white dwarf has been formed.  
Where does the following step fit into the given list of steps: Only the core is left 

A:  After step 6. 
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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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