Task: Sentence Ordering
Input (English): Steps: (1) Food is squeezed down the esophagus when you swallow (2) Acid and enzyme in the stomach break the food down (3) Releases nutrients (4) Food then pumped into small intestine (5) Fluid and enzymes from liver and pancreas pumped into small intestine (6) Help break food into smallest molecules (7) Nutrients pass through wall of small intestine (8) Nutrients absorbed into blood stream (9) Unused materials passed into large intestine to become fecal matter.  
Where does the following step fit into the given list of steps: An enzyme in saliva begins to break down carbohydrates 
Output (English):  Before step 1.