Task: Sentence Ordering
Input (English): Steps: (1) Sunlight shines on plants (2) Cells with chlorophyll in them capture the light energy (3) Plants absorb carbon dioxide through their stoma (4) Plants absorb water through their roots and other parts of themselves (5) Plants absorb minerals through their roots (6) Plants convert these inputs into sugars (7) Sugars can be used as energy sources (8) Excess water and oxygen are released through stoma and other parts of the plant.  
Where does the following step fit into the given list of steps: Oxygen and water are also produced 
Output (English):  After step 7.