Problem: Sarah and Lydia are two sisters that have been learning how to farm since they were kids. After graduating college, they both started their own farms and have been working on their own for several years now. At a family get together, Sarah mentions that her farm is experiencing soil salination. Lydia finishes swallowing her bite of cake and remarks that her farm has never experienced that before. Given the paragraph above, please answer correctly the following question: Who has more free salts in the soil of their farm?

A: Sarah

Problem: A scientist is analyzing two different sounds, one from a deer and one from a zebra, with a device that allows her to see the sound waves of each noise. While looking at the results, she sees that the sound waves for the deer are more closely packed together, but the zebra's sound has very spread out waves. Given the paragraph above, please answer correctly the following question: Which animal's sound has a lower pitch?

A: zebra

Problem: Air pollution is a big problem in large industrial cities. New York has its share or air pollution. John is a doctor who works for a New York hospital. Today, he is seeing two patients, patient A and patient B. His diagnosis revealed that patient A has pulmonary fibrosis, but patient B does not have pulmonary fibrosis. Given the paragraph above, please answer correctly the following question: Were patient A's lung walls thickened or not thickened?

A: thickened

Problem: Because of the weed and insect menace villagers from North village decided to use herbicide tolerant crops. South village decided to postpone a decision and kept using regular seeds. Given the paragraph above, please answer correctly the following question: Which village reduced the number of chemicals needed during a growing season?

A:
North