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: More pollutants mean poorer air quality.
 Question: When a river gets emptied of a lot of waste chemicals it becomes 
 Choices: A)cleaner 
B)dirtier

Ex Output:
cleaner


Ex Input:
Paragraph: More recently, the death rate has fallen because of the availability of more food and medical advances.
 Question: When the villagers are living longer, the food source is likely 
 Choices: A)great 
B)small

Ex Output:
great


Ex Input:
Paragraph: The pupil automatically gets bigger or smaller to let more or less light in as needed.
 Question: John was observing the patient. He saw that as less light was let in, the pupil would get 
 Choices: A)bigger 
B)smaller.

Ex Output:

smaller.