Problem: Annelid:

It is thought that annelids were originally animals with two separate sexes, which released ova and sperm into the water via their nephridia. The fertilized eggs develop into trochophore larvae, which live as plankton. Later they sink to the sea-floor and metamorphose into miniature adults: the part of the trochophore between the apical tuft and the prototroch becomes the prostomium (head); a small area round the trochophore's anus becomes the pygidium (tail-piece); a narrow band immediately in front of that becomes the growth zone that produces new segments; and the rest of the trochophore becomes the peristomium (the segment that contains the mouth).

What do annelids' larvae live like?
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A: plankton

Problem: These symmetries are represented by functions. Each of these functions sends a point in the square to the corresponding point under the symmetry. For example, r1 sends a point to its rotation 90 clockwise around the square's center, and fh sends a point to its reflection across the square's vertical middle line. Composing two of these symmetry functions gives another symmetry function. These symmetries determine a group called the dihedral group of degree 4 and denoted D4. The underlying set of the group is the above set of symmetry functions, and the group operation is function composition. Two symmetries are combined by composing them as functions, that is, applying the first one to the square, and the second one to the result of the first application. The result of performing first a and then b is written symbolically from right to left as
What sends a point in the square to the relating point under the symmetry?
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Answer: functions

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Much of mandolin development revolved around the soundboard (the top). Pre-mandolin instruments were quiet instruments, strung with as many as six courses of gut strings, and were plucked with the fingers or with a quill. However, modern instruments are louderusing four courses of metal strings, which exert more pressure than the gut strings. The modern soundboard is designed to withstand the pressure of metal strings that would break earlier instruments. The soundboard comes in many shapesbut generally round or teardrop-shaped, sometimes with scrolls or other projections. There is usually one or more sound holes in the soundboard, either round, oval, or shaped like a calligraphic F (f-hole). A round or oval sound hole may be covered or bordered with decorative rosettes or purfling.
How many courses of metal strings were pre-mandolin instruments strung with?
A: unanswerable

Context and question: Several systems were proposed as the new standard for the US, including the Japanese MUSE system, but all were rejected by the FCC because of their higher bandwidth requirements. At this time, the number of television channels was growing rapidly and bandwidth was already a problem. A new standard had to be more efficient, needing less bandwidth for HDTV than the existing NTSC.
Who rejected systems such as MUSE as the old standard for the US?
Answer: unanswerable

Question: The Federation of International Gymnastics (FIG) was founded in Liege in 1881. By the end of the nineteenth century, men's gymnastics competition was popular enough to be included in the first "modern" Olympic Games in 1896. From then on until the early 1950s, both national and international competitions involved a changing variety of exercises gathered under the rubric, gymnastics, that would seem strange to today's audiences and that included for example, synchronized team floor calisthenics, rope climbing, high jumping, running, and horizontal ladder. During the 1920s, women organized and participated in gymnastics events. The first women's Olympic competition was primitive, only involving synchronized calisthenics and track and field. These games were held in 1928, in Amsterdam.
Is there an answer to this question: What year was the BIT founded?

Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The first time "affirmative action" is used by the federal government concerning race is in President John F. Kennedy's Executive Order 10925, which was chaired by Vice President Johnson. At Johnson's inaugural ball in Texas, he met with a young black lawyer, Hobart Taylor Jr., and gave him the task to co-author the executive order. He wanted a phrase that "gave a sense of positivity to performance under the order." He was torn between the words "positive action" and "affirmative action," and selected the later due to its alliterative quality. The term "active recruitment" started to be used as well. This order, albeit heavily worked up as a significant piece of legislation, in reality carried little actual power. The scope was limited to a couple hundred defense contractors, leaving nearly $7.5 billion in federal grants and loans unsupervised.:60
What was the main reason that "affirmative action" was chosen over "positive action"?
A:
alliterative quality