Problem: BeiDou Navigation Satellite System:

The three latest satellites will jointly undergo testing of a new system of navigation signaling and inter-satellite links, and start providing navigation services when ready.

How many satellites will undergo separate testing for new signaling units?
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A: unanswerable

Problem: In July 2006, a Hezbollah artillery assault on Israel's northern border communities and a cross-border abduction of two Israeli soldiers precipitated the month-long Second Lebanon War. On 6 September 2007, the Israeli Air Force destroyed a nuclear reactor in Syria. In May 2008, Israel confirmed it had been discussing a peace treaty with Syria for a year, with Turkey as a go-between. However, at the end of the year, Israel entered another conflict as a ceasefire between Hamas and Israel collapsed. The Gaza War lasted three weeks and ended after Israel announced a unilateral ceasefire. Hamas announced its own ceasefire, with its own conditions of complete withdrawal and opening of border crossings. Despite neither the rocket launchings nor Israeli retaliatory strikes having completely stopped, the fragile ceasefire remained in order. In what Israel described as a response to more than a hundred Palestinian rocket attacks on southern Israeli cities, Israel began an operation in Gaza on 14 November 2012, lasting eight days. Israel started another operation in Gaza following an escalation of rocket attacks by Hamas in July 2014.
How long did the operation in Gaza in November last?
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Answer: eight days

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The campaigns of French Emperor and General Napoleon Bonaparte characterized the Napoleonic Era. Born on Corsica as the French invaded, and dying suspiciously on the tiny British Island of St. Helena, this brilliant commander, controlled a French Empire that, at its height, ruled a large portion of Europe directly from Paris, while many of his friends and family ruled countries such as Spain, Poland, several parts of Italy and many other Kingdoms Republics and dependencies. The Napoleonic Era changed the face of Europe forever, and old Empires and Kingdoms fell apart as a result of the mighty and "Glorious" surge of Republicanism.
Where was Napoleon Bonaparte born?
A: Corsica

Context and question: When discussing peer relationships among adolescents it is also important to include information in regards to how they communicate with one another. An important aspect of communication is the channel used. Channel, in this respect, refers to the form of communication, be it face-to-face, email, text message, phone or other. Teens are heavy users of newer forms of communication such as text message and social-networking websites such as Facebook, especially when communicating with peers. Adolescents use online technology to experiment with emerging identities and to broaden their peer groups, such as increasing the amount of friends acquired on Facebook and other social media sites. Some adolescents use these newer channels to enhance relationships with peers however there can be negative uses as well such as cyberbullying, as mentioned previously, and negative impacts on the family.
What is a potential negative effect of using newer online channels of communication?
Answer: cyberbullying

Question: There is ongoing debate about whether central banks should target zero inflation (which would mean a constant value for the U.S. dollar over time) or low, stable inflation (which would mean a continuously but slowly declining value of the dollar over time, as is the case now). Although some economists are in favor of a zero inflation policy and therefore a constant value for the U.S. dollar, others contend that such a policy limits the ability of the central bank to control interest rates and stimulate the economy when needed.
Is there an answer to this question: What would zero inflation mean for the US dollar over time?

Answer: constant value

While he was imprisoned in the castle of Fardajan near Hamadhan, Avicenna wrote his famous "Floating Man" literally falling man thought experiment to demonstrate human self-awareness and the substantiality and immateriality of the soul. Avicenna believed his "Floating Man" thought experiment demonstrated that the soul is a substance, and claimed humans cannot doubt their own consciousness, even in a situation that prevents all sensory data input. The thought experiment told its readers to imagine themselves created all at once while suspended in the air, isolated from all sensations, which includes no sensory contact with even their own bodies. He argued that, in this scenario, one would still have self-consciousness. Because it is conceivable that a person, suspended in air while cut off from sense experience, would still be capable of determining his own existence, the thought experiment points to the conclusions that the soul is a perfection, independent of the body, and an immaterial substance. The conceivability of this "Floating Man" indicates that the soul is perceived intellectually, which entails the soul's separateness from the body. Avicenna referred to the living human intelligence, particularly the active intellect, which he believed to be the hypostasis by which God communicates truth to the human mind and imparts order and intelligibility to nature. Following is an English translation of the argument:
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What did Avicenna write after being released from a castle near Hamahhan?
Ah, so..
unanswerable