You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).

Ex Input:
Paragraph: This is also called diffusion, and the process is much faster in gases than in liquids, because the particles in gases are further apart.
 Question: Diffusion occurs slower in 
 Choices: A)water 
B)oxygen.

Ex Output:
water


Ex Input:
Paragraph: Rougher surfaces have more friction between them than smoother surfaces.
 Question: If Mona is comparing sandpaper with notebook paper and she determines that sandpaper is rougher then notebook paper, which object has less friction? 
 Choices: A)sandpaper 
B)notebook paper

Ex Output:
notebook paper


Ex Input:
Paragraph: The more curved the surface of a lens is, the more it refracts light.
 Question: Dave was looking lenses for his new digital camera. He saw on the specifications that the less curved the lens is, the amount of light refracted 
 Choices: A)increases 
B)decreases

Ex Output:

decreases