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: Boundaries can be inclusive or exclusive depending on how they are perceived by other people. An exclusive boundary arises, for example, when a person adopts a marker that imposes restrictions on the behaviour of others. An inclusive boundary is created, by contrast, by the use of a marker with which other people are ready and able to associate. At the same time, however, an inclusive boundary will also impose restrictions on the people it has included by limiting their inclusion within other boundaries. An example of this is the use of a particular language by a newcomer in a room full of people speaking various languages. Some people may understand the language used by this person while others may not. Those who do not understand it might take the newcomer's use of this particular language merely as a neutral sign of identity. But they might also perceive it as imposing an exclusive boundary that is meant to mark them off from her. On the other hand, those who do understand the newcomer's language could take it as an inclusive boundary, through which the newcomer associates herself with them to the exclusion of the other people present. Equally, however, it is possible that people who do understand the newcomer but who also speak another language may not want to speak the newcomer's language and so see her marker as an imposition and a negative boundary. It is possible that the newcomer is either aware or unaware of this, depending on whether she herself knows other languages or is conscious of the plurilingual quality of the people there and is respectful of it or not.

SOLUTION: What are two types of individual boundaries?

PROBLEM: Passage: Popper contrasts his views with the notion of the "hopeful monster" that has large phenotype mutations and calls it the "hopeful behavioural monster". After behaviour has changed radically, small but quick changes of the phenotype follow to make the organism fitter to its changed goals. This way it looks as if the phenotype were changing guided by some invisible hand, while it is merely natural selection working in combination with the new behaviour. For example, according to this hypothesis, the eating habits of the giraffe must have changed before its elongated neck evolved. Popper contrasted this view as "evolution from within" or "active Darwinism" (the organism actively trying to discover new ways of life and being on a quest for conquering new ecological niches), with the naturalistic "evolution from without" (which has the picture of a hostile environment only trying to kill the mostly passive organism, or perhaps segregate some of its groups).

SOLUTION: What happens after behavior changes only a little?

PROBLEM: Passage: With the introduction of the blast furnace to Europe in the Middle Ages, pig iron was able to be produced in much higher volumes than wrought iron. Because pig iron could be melted, people began to develop processes of reducing the carbon in the liquid pig iron to create steel. Puddling was introduced during the 1700s, where molten pig iron was stirred while exposed to the air, to remove the carbon by oxidation. In 1858, Sir Henry Bessemer developed a process of steel-making by blowing hot air through liquid pig iron to reduce the carbon content. The Bessemer process was able to produce the first large scale manufacture of steel. Once the Bessemer process began to gain widespread use, other alloys of steel began to follow. Mangalloy, an alloy of steel and manganese exhibiting extreme hardness and toughness, was one of the first alloy steels, and was created by Robert Hadfield in 1882.

SOLUTION:
What allowed wrought iron to be produced in larger quantities than pig iron during the Middle Ages?