Here is a question about this article: With nearly a third of Bostonians using public transit for their commute to work, Boston has the fifth-highest rate of public transit usage in the country. Boston's subway system, the Massachusetts Bay Transportation Authority (MBTAknown as the "T") operates the oldest underground rapid transit system in the Americas, and is the fourth-busiest rapid transit system in the country, with 65.5 miles (105 km) of track on four lines. The MBTA also operates busy bus and commuter rail networks, and water shuttles.
What is the answer to this question: What is the name of Bostons subway system?
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So... MBTA

Here is a question about this article: Over two centuries after the removal of the capital to Beijing, Nanjing was destined to become the capital of a Ming emperor one more time. After the fall of Beijing to Li Zicheng's rebel forces and then to the Manchu-led Qing dynasty in the spring of 1644, the Ming prince Zhu Yousong was enthroned in Nanjing in June 1644 as the Hongguang Emperor. His short reign was described by later historians as the first reign of the so-called Southern Ming dynasty.
What is the answer to this question: What Ming prince was enthroned in Nanjing?
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So... Zhu Yousong

Here is a question about this article: Individual contestants have generated controversy in this competition for their past actions, or for being 'ringers' planted by the producers. A number of contestants had been disqualified for various reasons, such as for having an existing contract or undisclosed criminal records, although the show had been accused of double standard for disqualifying some but not others.
What is the answer to this question: Producers have been accused of planting what within the show?
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So...
ringers