Task: Question Answering
Input (English): Question: Will plays with an adjustable ramp for his cars. He sets the angle at 25 degrees and then at 15 degrees. Which ramp angle requires less input force on the cars? 
 Option1: 25 degrees 
 Option2: 15 degrees 
 Explanation: The more gradual the slope of the inclined plane, the less input force is needed and the greater the mechanical advantage.
Output (English): 15 degrees