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: Old English was not static, and its usage covered a period of 700 years, from the Anglo-Saxon settlement of Britain in the 5th century to the late 11th century, some time after the Norman invasion. While indicating that the establishment of dates is an arbitrary process, Albert Baugh dates Old English from 450 to 1150, a period of full inflections, a synthetic language. Perhaps around 85 per cent of Old English words are no longer in use, but those that survived, to be sure, are basic elements of Modern English vocabulary.
answer:
Where did Anglo-Saxons settle in the 500's?


question:
Passage: Thermodynamics divides energy transformation into two kinds: reversible processes and irreversible processes. An irreversible process is one in which energy is dissipated (spread) into empty energy states available in a volume, from which it cannot be recovered into more concentrated forms (fewer quantum states), without degradation of even more energy. A reversible process is one in which this sort of dissipation does not happen. For example, conversion of energy from one type of potential field to another, is reversible, as in the pendulum system described above. In processes where heat is generated, quantum states of lower energy, present as possible excitations in fields between atoms, act as a reservoir for part of the energy, from which it cannot be recovered, in order to be converted with 100% efficiency into other forms of energy. In this case, the energy must partly stay as heat, and cannot be completely recovered as usable energy, except at the price of an increase in some other kind of heat-like increase in disorder in quantum states, in the universe (such as an expansion of matter, or a randomisation in a crystal).
answer:
Thermodynamics multiplies energy information into what two kinds?


question:
Passage: Prizes are awarded on the results of trials (internal exams), GCSE and AS-levels. In addition, many subjects and activities have specially endowed prizes, several of which are awarded by visiting experts. The most prestigious is the Newcastle Scholarship, awarded on the strength of an examination, consisting of two papers in philosophical theology, moral theory and applied ethics. Also of note are the Gladstone Memorial Prize and the Coutts Prize, awarded on the results of trials and AS-level examinations in C; and the Huxley Prize, awarded for a project on a scientific subject. Other specialist prizes include the Newcastle Classical Prize; the Rosebery Exhibition for History; the Queen’s Prizes for French and German; the Duke of Newcastle’s Russian Prize; the Beddington Spanish Prize; the Strafford and Bowman Shakespeare Prizes; the Tomline and Russell Prizes in Mathematics; the Sotheby Prize for History of Art; the Waddington Prize for Theology and Philosophy; the Birley Prize for History; The Lower Boy Rosebery Prize and the Wilder Prize for Theology. Prizes are awarded too for excellence in such activities as painting, sculpture, ceramics, playing musical instruments, musical composition, declamation, silverwork, and design.
answer:

What are generally the hardest internal exams at Eton?