Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Bertrand Russell saw the Enlightenment as a phase in a progressive development, which began in antiquity, and that reason and challenges to the established order were constant ideals throughout that time. Russell said that the Enlightenment was ultimately born out of the Protestant reaction against the Catholic counter-reformation, and that philosophical views such as affinity for democracy against monarchy originated among 16th-century Protestants to justify their desire to break away from the Catholic Church. Though many of these philosophical ideals were picked up by Catholics, Russell argues, by the 18th century the Enlightenment was the principal manifestation of the schism that began with Martin Luther.
Which philosopher believed that the Enlightenment was ultimately born out of Protestant reaction against the Catholic counter-reformation?
A: Bertrand Russell

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The War on Terrorism is a global effort by the governments of several countries (primarily the United States and its principal allies) to neutralize international terrorist groups (primarily Islamic Extremist terrorist groups, including al-Qaeda) and ensure that countries considered by the US and some of its allies to be Rogue Nations no longer support terrorist activities. It has been adopted primarily as a response to the September 11, 2001 attacks on the United States. Since 2001, terrorist motivated attacks upon service members have occurred in Arkansas and Texas.
The War On Terrorism was caused by what event?
A: the September 11, 2001 attacks

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The hydraulic crane was invented by Sir William Armstrong in 1846, primarily for use at the Tyneside docks for loading cargo. These quickly supplanted the earlier steam driven elevators: exploiting Pascal's law, they provided a much greater force. A water pump supplied a variable level of water pressure to a plunger encased inside a vertical cylinder, allowing the level of the platform (carrying a heavy load) to be raised and lowered. Counterweights and balances were also used to increase the lifting power of the apparatus.
The water pump supplied water pressure to a plunger located where?
A: encased inside a vertical cylinder

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
On the recovery side of the flight deck, the adaptation to the aircraft loadout is mirrored. Non-VTOL or conventional aircraft cannot decelerate on their own, and almost all carriers using them must have arrested-recovery systems (-BAR, e.g. CATOBAR or STOBAR) to recover their aircraft. Aircraft that are landing extend a tailhook that catches on arrestor wires stretched across the deck to bring themselves to a stop in a short distance. Post-WWII Royal Navy research on safer CATOBAR recovery eventually led to universal adoption of a landing area angled off axis to allow aircraft who missed the arresting wires to "bolt" and safely return to flight for another landing attempt rather than crashing into aircraft on the forward deck.
What is not the purpose of an arrested-recovery system?
A:
unanswerable