Problem: Two twin sisters were taken to the doctor's office by their parents. It turned out that Mary had hemophilia while Ann didn't have any blood disease. Given the paragraph above, please answer correctly the following question: Which sister was less exposed to the risk of bleeding to death?

A: Ann

Problem: Two farmers had neighboring parcels of land. Bob had a nice parcel of old growth forest, while the other farmer, named Bill , had a similar sized parcel covered in grasslands. Given the paragraph above, please answer correctly the following question: Which farmer observed a larger buildup of fulvic acids in the upper soil profile?

A: Bob

Problem: A doctor tested two people for HIV. Tom had the virus in his blood, while Nick didn't have HIV, he was healthy. Tom has apparently had the virus for 20 years. Given the paragraph above, please answer correctly the following question: Which person had the number of helper T cells decreasing?

A: Tom

Problem: Ecuador and Panama both had beautiful rivers flowing into the Pacific ocean. Ecuador uses their river to dispose of their waste while Panama is very eco-friendly and doesn't do that. Given the paragraph above, please answer correctly the following question: Which country causes fewer dead zones in the ocean?

A:
Panama