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.

[EX Q]: 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
[EX A]: After step 2.

[EX 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
[EX A]: After step 6.

[EX Q]: Steps: (1) Magma rises through cracks in the Earth's crust (2) The pressure causes plates to move (3) The lava from the eruption cools to form new crust (4) After several eruptions, the rock builds up and a volcano forms
Where does the following step fit into the given list of steps: Magma explodes to the surface
[EX A]:
After step 2.