instruction:
This task is about creating an unanswerable question based on a given passage. Construct a question that looks relevant to the given context but is unanswerable. Following are a few suggestions about how to create unanswerable questions:
(i) create questions which require satisfying a constraint that is not mentioned in the passage
(ii) create questions which require information beyond what is provided in the passage in order to answer
(iii) replace an existing entity, number, date mentioned in the passage with other entity, number, date and use it in the question
(iv) create a question which is answerable from the passage and then replace one or two words by their antonyms or insert/remove negation words to make it unanswerable.
question:
Passage: Acute myocardial infarction refers to two subtypes of acute coronary syndrome, namely non-ST-elevated and ST-elevated MIs, which are most frequently (but not always) a manifestation of coronary artery disease. The most common triggering event is the disruption of an atherosclerotic plaque in an epicardial coronary artery, which leads to a clotting cascade, sometimes resulting in total occlusion of the artery. Atherosclerosis is the gradual buildup of cholesterol and fibrous tissue in plaques in the wall of arteries (in this case, the coronary arteries), typically over decades. Bloodstream column irregularities visible on angiography reflect artery lumen narrowing as a result of decades of advancing atherosclerosis. Plaques can become unstable, rupture, and additionally promote the formation of a blood clot that occludes the artery; this can occur in minutes. When a severe enough plaque rupture occurs in the coronary arteries, it leads to MI (necrosis of downstream myocardium). It is estimated that one billion cardiac cells are lost in a typical MI.
answer:
How many subtypes does ST-elevated MI have?


question:
Passage: The oak forests of the southern and central Appalachians consist largely of black, northern red, white, chestnut and scarlet oaks (Quercus velutina, Q. rubra, Q. alba, Q. prinus and Q. coccinea) and hickories, such as the pignut (Carya glabra) in particular. The richest forests, which grade into mesic types, usually in coves and on gentle slopes, have dominantly white and northern red oaks, while the driest sites are dominated by chestnut oak, or sometimes by scarlet or northern red oaks. In the northern Appalachians the oaks, except for white and northern red, drop out, while the latter extends farthest north.
answer:
What is the dominate type of oak in the Appalachians?


question:
Passage: Yale has produced alumni distinguished in their respective fields. Among the best-known are U.S. Presidents William Howard Taft, Gerald Ford, George H. W. Bush, Bill Clinton and George W. Bush; royals Crown Princess Victoria Bernadotte, Prince Rostislav Romanov and Prince Akiiki Hosea Nyabongo; heads of state, including Italian prime minister Mario Monti, Turkish prime minister Tansu Çiller, Mexican president Ernesto Zedillo, German president Karl Carstens, and Philippines president José Paciano Laurel; U.S. Supreme Court Justices Sonia Sotomayor, Samuel Alito and Clarence Thomas; U.S. Secretaries of State John Kerry, Hillary Clinton, Cyrus Vance, and Dean Acheson; authors Sinclair Lewis, Stephen Vincent Benét, and Tom Wolfe; lexicographer Noah Webster; inventors Samuel F. B. Morse and Eli Whitney; patriot and "first spy" Nathan Hale; theologian Jonathan Edwards; actors, directors and producers Paul Newman, Henry Winkler, Vincent Price, Meryl Streep, Sigourney Weaver, Jodie Foster, Angela Bassett, Patricia Clarkson, Courtney Vance, Frances McDormand, Elia Kazan, George Roy Hill, Edward Norton, Lupita Nyong'o, Allison Williams, Oliver Stone, Sam Waterston, and Michael Cimino; "Father of American football" Walter Camp, James Franco, "The perfect oarsman" Rusty Wailes; baseball players Ron Darling, Bill Hutchinson, and Craig Breslow; basketball player Chris Dudley; football players Gary Fencik, and Calvin Hill; hockey players Chris Higgins and Mike Richter; figure skater Sarah Hughes; swimmer Don Schollander; skier Ryan Max Riley; runner Frank Shorter; composers Charles Ives, Douglas Moore and Cole Porter; Peace Corps founder Sargent Shriver; child psychologist Benjamin Spock; architects Eero Saarinen and Norman Foster; sculptor Richard Serra; film critic Gene Siskel; television commentators Dick Cavett and Anderson Cooper; New York Times journalist David Gonzalez; pundits William F. Buckley, Jr., and Fareed Zakaria; economists Irving Fischer, Mahbub ul Haq, and Paul Krugman; cyclotron inventor and Nobel laureate in Physics, Ernest Lawrence; Human Genome Project director Francis S. Collins; mathematician and chemist Josiah Willard Gibbs; and businesspeople, including Time Magazine co-founder Henry Luce, Morgan Stanley founder Harold Stanley, Boeing CEO James McNerney, FedEx founder Frederick W. Smith, Time Warner president Jeffrey Bewkes, Electronic Arts co-founder Bing Gordon, and investor/philanthropist Sir John Templeton; pioneer in electrical applications Austin Cornelius Dunham.
answer:

What royalty hasn't attended Yale?