Task: Sentence Ordering
Input (English): Steps: (1) There is a fetus in the womb (2) They are born and are a baby (3) The baby grows into a child (4) Puberty turns the child into an adolescent (5) An adult becomes an elderly person (6) The elderly person dies.  
Where does the following step fit into the given list of steps: The adolescent becomes an adult 
Output (English):  After step 4.