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.

Example Input: Steps: (1) These pores are called stomata (2) Water is absorbed by the roots (3) It passes through vessels in the stem on its way to the leaves (4) Sunlight is absorbed by a green chemical in the leaves.  
Where does the following step fit into the given list of steps: Carbon dioxide from the air passes through small pores (holes) in the leaves 
Example Output:  Before step 1. 

Example Input: Steps: (1) An airline reservation is made (2) The passenger arrives early at the airport (3) The luggage is checked (4) The passenger waits in line (5) The passenger shows their identification and gets a boarding pass (6) The passenger goes to their gate (7) The passenger gets in line when it's time to board (8) The plane arrives at the destination (9) The passenger gets off the plane at their destination.  
Where does the following step fit into the given list of steps: The person boards the plane 
Example Output:  After step 7. 

Example Input: Steps: (1) A person takes in oxygen through their nose or mouth (2) The oxygen travels into the body (3) Carbon dioxide is produced by the glucose breakdown (4) The carbon dioxide is exhaled out of the body through the nose or mouth.  
Where does the following step fit into the given list of steps: Breaks down into glucose 
Example Output:
 After step 2.