Problem: Does "Some countries observe it only in some regions; for example, southern Brazil observes it while equatorial Brazil does not." answer the question "What part of Brazil does not observe DST?"

A: yes

Problem: Does "Nintendo claimed that allowing customers to rent games would significantly hurt sales and drive up the cost of games." answer the question "According to Nintendo what was the danger in renting games?"

A: yes

Problem: Does "The wuzhu became China's standard coin until the Tang dynasty (618907 AD)." answer the question "What interrupted the use of the wuzhu coin during the reign of Wang Mang?"

A:
no