Problem: Given the question: Two bird islands experienced different levels of rainfall. West island experienced a lengthy drought that lasted several years. Many birds were affected by this drought. East island had several normal years as far as rainfall was concerned. Given the paragraph above, please answer correctly the following question: Which island had fewer birds with bigger beaks that were better off?
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The answer is:
East

Problem: Given the question: Doctors studied two groups of patients. Group W which had people with sickle cell disease, and group A which had normal people in it. Given the paragraph above, please answer correctly the following question: Which group had more individuals with aggregating hemoglobin?
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The answer is:
Group W

Problem: Given the question: Two different rivers were stocked with adult fish. Red river had a lower fish population because the fish had hardly reproduced naturally. Black river had doubled it's fish population in two years because they reproduced naturally. Given the paragraph above, please answer correctly the following question: Which of the two rivers had more fish release their gametes into the surrounding water ?
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The answer is:
Black