Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
There are occasional brief hints and allusions in his longer works however that Avicenna considered philosophy as the only sensible way to distinguish real prophecy from illusion. He did not state this more clearly because of the political implications of such a theory, if prophecy could be questioned, and also because most of the time he was writing shorter works which concentrated on explaining his theories on philosophy and theology clearly, without digressing to consider epistemological matters which could only be properly considered by other philosophers.
What did Avicenna fear about stating his theories on philosophy more clearly?
A: the political implications of such a theory

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
At all airports the use of a traffic pattern (often called a traffic circuit outside the U.S.) is possible. They may help to assure smooth traffic flow between departing and arriving aircraft. There is no technical need within modern aviation for performing this pattern, provided there is no queue. And due to the so-called SLOT-times, the overall traffic planning tend to assure landing queues are avoided. If for instance an aircraft approaches runway 17 (which has a heading of approx. 170 degrees) from the north (coming from 360/0 degrees heading towards 180 degrees), the aircraft will land as fast as possible by just turning 10 degrees and follow the glidepath, without orbit the runway for visual reasons, whenever this is possible. For smaller piston engined airplanes at smaller airfields without ILS equipment, things are very differently though.
What is it like for aircraft landing at small airfields as fast as possible while following the glidepath?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The earliest known American lodges were in Pennsylvania. The Collector for the port of Pennsylvania, John Moore, wrote of attending lodges there in 1715, two years before the formation of the first Grand Lodge in London. The Premier Grand Lodge of England appointed a Provincial Grand Master for North America in 1731, based in Pennsylvania. Other lodges in the colony obtained authorisations from the later Antient Grand Lodge of England, the Grand Lodge of Scotland, and the Grand Lodge of Ireland, which was particularly well represented in the travelling lodges of the British Army. Many lodges came into existence with no warrant from any Grand Lodge, applying and paying for their authorisation only after they were confident of their own survival.
Who was the Collector for the port of Pennsylvania in 1615?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In the early 1970s the Rolling Stones developed their hard rock sound with Exile on Main St. (1972). Initially receiving mixed reviews, according to critic Steve Erlewine it is now "generally regarded as the Rolling Stones' finest album". They continued to pursue the riff-heavy sound on albums including It's Only Rock 'n' Roll (1974) and Black and Blue (1976). Led Zeppelin began to mix elements of world and folk music into their hard rock from Led Zeppelin III (1970) and Led Zeppelin IV (1971). The latter included the track "Stairway to Heaven", which would become the most played song in the history of album-oriented radio. Deep Purple continued to define hard rock, particularly with their album Machine Head (1972), which included the tracks "Highway Star" and "Smoke on the Water". In 1975 guitarist Ritchie Blackmore left, going on to form Rainbow and after the break-up of the band the next year, vocalist David Coverdale formed Whitesnake. 1970 saw The Who release Live at Leeds, often seen as the archetypal hard rock live album, and the following year they released their highly acclaimed album Who's Next, which mixed heavy rock with extensive use of synthesizers. Subsequent albums, including Quadrophenia (1973), built on this sound before Who Are You (1978), their last album before the death of pioneering rock drummer Keith Moon later that year.
What two hard rock songs are featured on Deep Purple's Machine Head album?
A:
"Highway Star" and "Smoke on the Water"