Task: Question Answering
Input (English): Paragraph: The more curved the surface of a lens is, the more it refracts the light that passes through it.
 Question: In a science class, the professor demonstrates refraction to the class. First, the professor shows a curved lens from a binocular, and then a flat pane of glass, demonstrating that 
 Choices: A)the curved lens refracts more light 
B)the flat pane refracts more light.
Output (English): the curved lens refracts more light