Task: Question Answering
Input (English): Question: Will ran in a race. His pulse rate decreases, providing _____ oxygen to his cells. 
 Option1: less 
 Option2: more 
 Explanation: This causes the delivery of less oxygen to the cells, and this stimulates the heart rate via adrenalin, so that pulse rate increases in an effort to deliver enough oxygen to cells.
Output (English): less