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.
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Question: Passage: Matrix groups consist of matrices together with matrix multiplication. The general linear group GL(n, R) consists of all invertible n-by-n matrices with real entries. Its subgroups are referred to as matrix groups or linear groups. The dihedral group example mentioned above can be viewed as a (very small) matrix group. Another important matrix group is the special orthogonal group SO(n). It describes all possible rotations in n dimensions. Via Euler angles, rotation matrices are used in computer graphics.

Answer: What are matrices and matrix groups combined called?


Question: Passage: The eastern arm shows considerable diversity. In England it is generally long and may have two distinct sections, both choir and presbytery. It is often square ended or has a projecting Lady Chapel, dedicated to the Virgin Mary. In France the eastern end is often polygonal and surrounded by a walkway called an ambulatory and sometimes a ring of chapels called a "chevet". While German churches are often similar to those of France, in Italy, the eastern projection beyond the transept is usually just a shallow apsidal chapel containing the sanctuary, as at Florence Cathedral.

Answer: Which arm in England would generally show no distinct sections?


Question: Passage: In southwestern Germany, territorial revision seemed to be a top priority since the border between the French and American occupation zones was set along the Autobahn Karlsruhe-Stuttgart-Ulm (today the A8). Article 118 stated "The division of the territory comprising Baden, Württemberg-Baden and Württemberg-Hohenzollern into Länder may be revised, without regard to the provisions of Article 29, by agreement between the Länder concerned. If no agreement is reached, the revision shall be effected by a federal law, which shall provide for an advisory referendum." Since no agreement was reached, a referendum was held on 9 December 1951 in four different voting districts, three of which approved the merger (South Baden refused but was overruled as the result of total votes was decisive). On 25 April 1952, the three former states merged to form Baden-Württemberg.

Answer:
What was territorial revision considered in southeastern Germany?