Task: Sentence Ordering
Input (English): Steps: (1) The earth develops cracks deep beneath the surface (2) The cracks get very long and big in some places (3) The earth places pressure against the rocks on both sides of the cracks (4) The pressure causes the rocks to press against each other very hard (5) The cracks continue to develop (6) The pressure and movement around the cracks causes the rocks to crumble in some places (7) A lot of energy is released (8) The energy causes seismic waves (9) The seismic waves move the earth in an earthquake.  
Where does the following step fit into the given list of steps: The earth moves against itself on both sides of the cracks 
Output (English):  After step 5.