Problem: Norfolk Island:

As a relatively small and isolated oceanic island, Norfolk has few land birds but a high degree of endemicity among them. Many of the endemic species and subspecies have become extinct as a result of massive clearance of the island's native vegetation of subtropical rainforest for agriculture, hunting and persecution as agricultural pests. The birds have also suffered from the introduction of mammals such as rats, cats, pigs and goats, as well as from introduced competitors such as common blackbirds and crimson rosellas.

What non-native birds caused the bird populations of Norfolk Island to be happy?
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A: unanswerable


Problem: The Dutch Republic formally made claim to Saint Helena in 1633, although there is no evidence that they ever occupied, colonised or fortified it. By 1651, the Dutch had mainly abandoned the island in favour of their colony at the Cape of Good Hope.
What year did the Dutch abandon the island?
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Answer: 1651


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Ming government officials fought against each other, against fiscal collapse, and against a series of peasant rebellions. They were unable to capitalise on the Manchu succession dispute and installation of a minor as emperor. In April 1644, the capital at Beijing was sacked by a coalition of rebel forces led by Li Zicheng, a former minor Ming official, who established a short-lived Shun dynasty. The last Ming ruler, the Chongzhen Emperor, committed suicide when the city fell, marking the official end of the dynasty.
How did the Chongzhen Emporer die?
A: suicide


Context and question: Parts of what is now Rajasthan were part of the Indus Valley Civilization. Kalibangan, in Hanumangarh district, was a major provincial capital of the Indus Valley Civilization,. It is believed that Western Kshatrapas (405–35 BC) were Saka rulers of the western part of India (Saurashtra and Malwa: modern Gujarat, Southern Sindh, Maharashtra, Rajasthan). They were successors to the Indo-Scythians and were contemporaneous with the Kushans, who ruled the northern part of the Indian subcontinent. The Indo-Scythians invaded the area of Ujjain and established the Saka era (with their calendar), marking the beginning of the long-lived Saka Western Satraps state. Matsya, a state of the Vedic civilisation of India, is said to roughly corresponded to the former state of Jaipur in Rajasthan and included the whole of Alwar with portions of Bharatpur. The capital of Matsya was at Viratanagar (modern Bairat), which is said to have been named after its founder king Virata.
What area did the Saurashtra invade to establish the Saka era?
Answer: unanswerable


Question: Most early home computer systems developed their own 8-bit character sets containing line-drawing and game glyphs, and often filled in some or all of the control characters from 0–31 with more graphics. Kaypro CP/M computers used the "upper" 128 characters for the Greek alphabet. The IBM PC defined code page 437, which replaced the control-characters with graphic symbols such as smiley faces, and mapped additional graphic characters to the upper 128 positions. Operating systems such as DOS supported these code pages, and manufacturers of IBM PCs supported them in hardware. Digital Equipment Corporation developed the Multinational Character Set (DEC-MCS) for use in the popular VT220 terminal as one of the first extensions designed more for international languages than for block graphics. The Macintosh defined Mac OS Roman and Postscript also defined a set, both of these contained both international letters and typographic punctuation marks instead of graphics, more like modern character sets.
Is there an answer to this question: What did Macintosh use instead of graphics? 

Answer: typographic punctuation marks


Question: In the wake of the racially-motivated" church shooting in Charleston, South Carolina, Yale was under criticism again in the summer of 2015 for Calhoun College, one of 12 residential colleges, which was named after John C. Calhoun, a slave-owner and strong slavery supporter in the nineteenth century. In July 2015 students signed a petition calling for the name change. They argued in the petition that—while Calhoun was respected in the 19th century as an "extraordinary American statesman"—he was "one of the most prolific defenders of slavery and white supremacy" in the history of the United States. In August 2015 Yale President Peter Salovey addressed the Freshman Class of 2019 in which he responded to the racial tensions but explained why the college would not be renamed. He described Calhoun as a "a notable political theorist, a vice president to two different U.S. presidents, a secretary of war and of state, and a congressman and senator representing South Carolina." He acknowledged that Calhoun also "believed that the highest forms of civilization depend on involuntary servitude. Not only that, but he also believed that the races he thought to be inferior, black people in particular, ought to be subjected to it for the sake of their own best interests." Racial tensions increased in the fall of 2015 centering on comments by Nicholas A. Christakis and his wife Erika regarding freedom of speech. In April 2016 Salovey announced that "despite decades of vigorous alumni and student protests," Calhoun's name will remain on the Yale residential college explaining that it is preferable for Yale students to live in Calhoun's "shadow" so they will be "better prepared to rise to the challenges of the present and the future." He claimed that if they removed Calhoun's name, it would "obscure" his "legacy of slavery rather than addressing it." "Yale is part of that history" and "We cannot erase American history, but we can confront it, teach it and learn from it." One change that will be issued is the title of “master” for faculty members who serve as residential college leaders will be renamed to “head of college” due to its connotation of slavery.
Is there an answer to this question: What title change will be happening to reduce racial tensions?

Answer:
the title of “master” for faculty members who serve as residential college leaders will be renamed to “head of college”