TASK DEFINITION: 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.
PROBLEM: Passage: In the context of relativity, mass is not an additive quantity, in the sense that one can add the rest masses of particles in a system to get the total rest mass of the system. Thus, in relativity usually a more general view is that it is not the sum of rest masses, but the energy–momentum tensor that quantifies the amount of matter. This tensor gives the rest mass for the entire system. "Matter" therefore is sometimes considered as anything that contributes to the energy–momentum of a system, that is, anything that is not purely gravity. This view is commonly held in fields that deal with general relativity such as cosmology. In this view, light and other massless particles and fields are part of matter.

SOLUTION: What type of quantity is mass?

PROBLEM: Passage: To compete with the popular Family Computer in Japan, NEC Home Electronics launched the PC Engine in 1987, and Sega Enterprises followed suit with the Mega Drive in 1988. The two platforms were later launched in North America in 1989 as the TurboGrafx-16 and the Genesis respectively. Both systems were built on 16-bit architectures and offered improved graphics and sound over the 8-bit NES. However, it took several years for Sega's system to become successful. Nintendo executives were in no rush to design a new system, but they reconsidered when they began to see their dominance in the market slipping.

SOLUTION: What did SEGA release in 1987?

PROBLEM: Passage: Initially, Burke did not condemn the French Revolution. In a letter of 9 August 1789, Burke wrote: "England gazing with astonishment at a French struggle for Liberty and not knowing whether to blame or to applaud! The thing indeed, though I thought I saw something like it in progress for several years, has still something in it paradoxical and Mysterious. The spirit it is impossible not to admire; but the old Parisian ferocity has broken out in a shocking manner". The events of 5–6 October 1789, when a crowd of Parisian women marched on Versailles to compel King Louis XVI to return to Paris, turned Burke against it. In a letter to his son, Richard Burke, dated 10 October he said: "This day I heard from Laurence who has sent me papers confirming the portentous state of France—where the Elements which compose Human Society seem all to be dissolved, and a world of Monsters to be produced in the place of it—where Mirabeau presides as the Grand Anarch; and the late Grand Monarch makes a figure as ridiculous as pitiable". On 4 November Charles-Jean-François Depont wrote to Burke, requesting that he endorse the Revolution. Burke replied that any critical language of it by him should be taken "as no more than the expression of doubt" but he added: "You may have subverted Monarchy, but not recover'd freedom". In the same month he described France as "a country undone". Burke's first public condemnation of the Revolution occurred on the debate in Parliament on the army estimates on 9 February 1790, provoked by praise of the Revolution by Pitt and Fox:

SOLUTION:
What did Burke condemn in August 1789?