Context and question: An urban civilization, the Garamantes, arose around 500 BCE in the heart of the Sahara, in a valley that is now called the Wadi al-Ajal in Fezzan, Libya. The Garamantes achieved this development by digging tunnels far into the mountains flanking the valley to tap fossil water and bring it to their fields. The Garamantes grew populous and strong, conquering their neighbors and capturing many slaves (which were put to work extending the tunnels). The ancient Greeks and the Romans knew of the Garamantes and regarded them as uncivilized nomads. However, they traded with the Garamantes, and a Roman bath has been found in the Garamantes capital of Garama. Archaeologists have found eight major towns and many other important settlements in the Garamantes territory. The Garamantes civilization eventually collapsed after they had depleted available water in the aquifers and could no longer sustain the effort to extend the tunnels further into the mountains.
What caused the Roman civilization to collapse?
Answer: unanswerable
Context and question: Infrared cleaning is a technique used by some Motion picture film scanner, film scanners and flatbed scanners to reduce or remove the effect of dust and scratches upon the finished scan. It works by collecting an additional infrared channel from the scan at the same position and resolution as the three visible color channels (red, green, and blue). The infrared channel, in combination with the other channels, is used to detect the location of scratches and dust. Once located, those defects can be corrected by scaling or replaced by inpainting.
Along with the visible light channels, what channel is used to locate scratches and dust in scanners?
Answer: infrared
Context and question: A regular international ferry service provided by Brittany Ferries operates from Millbay taking cars and foot passengers directly to France (Roscoff) and Spain (Santander) on the three ferries, MV Armorique, MV Bretagne and MV Pont-Aven. There is a passenger ferry between Stonehouse and the Cornish hamlet of Cremyll, which is believed to have operated continuously since 1204. There is also a pedestrian ferry from the Mayflower Steps to Mount Batten, and an alternative to using the Tamar Bridge via the Torpoint Ferry (vehicle and pedestrian) across the River Tamar.
Where does the ferry to France terminate?
Answer:
Roscoff