Input: Red
Red is the traditional color of warning and danger. In the Middle Ages, a red flag announced that the defenders of a town or castle would fight to defend it, and a red flag hoisted by a warship meant they would show no mercy to their enemy. In Britain, in the early days of motoring, motor cars had to follow a man with a red flag who would warn horse-drawn vehicles, before the Locomotives on Highways Act 1896 abolished this law. In automobile races, the red flag is raised if there is danger to the drivers. In international football, a player who has made a serious violation of the rules is shown a red penalty card and ejected from the game.

What did a red flag signal in the Middle Ages?
Output: defenders of a town or castle would fight to defend it


Input: Article: The city is home to many professional franchises/teams in national competitions including: cricket clubs Melbourne Stars, Melbourne Renegades and Victorian Bushrangers, which play in the Big Bash League and other domestic cricket competitions; soccer clubs Melbourne Victory and Melbourne City FC (known until June 2014 as Melbourne Heart), which play in the A-League competition, both teams play their home games at AAMI Park, with the Victory also playing home games at Etihad Stadium. Rugby league club Melbourne Storm which plays in the NRL competition; rugby union clubs Melbourne Rebels and Melbourne Rising, which play in the Super Rugby and National Rugby Championship competitions respectively; netball club Melbourne Vixens, which plays in the trans-Tasman trophy ANZ Championship; basketball club Melbourne United, which plays in the NBL competition; Bulleen Boomers and Dandenong Rangers, which play in the WNBL; ice hockey teams Melbourne Ice and Melbourne Mustangs, who play in the Australian Ice Hockey League; and baseball club Melbourne Aces, which plays in the Australian Baseball League. Rowing is also a large part of Melbourne's sporting identity, with a number of clubs located on the Yarra River, out of which many Australian Olympians trained. The city previously held the nation's premier long distance swimming event the annual Race to Prince's Bridge, in the Yarra River.

Now answer this question: In which river was the annual Race to Prince's Bridge held?

Output: Yarra


Article: The question of priority for the variable resistance feature of the telephone was raised by the examiner before he approved Bell's patent application. He told Bell that his claim for the variable resistance feature was also described in Gray's caveat. Bell pointed to a variable resistance device in Bell's previous application in which Bell described a cup of mercury, not water. Bell had filed the mercury application at the patent office a year earlier on February 25, 1875, long before Elisha Gray described the water device. In addition, Gray abandoned his caveat, and because he did not contest Bell's priority, the examiner approved Bell's patent on March 3, 1876. Gray had reinvented the variable resistance telephone, but Bell was the first to write down the idea and the first to test it in a telephone.

Question: When did Bell put in his prior patent?
Ans: February 25, 1875


Here is a question about this article: In the first years of the Republic, controversy arose within the Reformed Church, mainly around the subject of predestination. This has become known as the struggle between Arminianism and Gomarism, or between Remonstrants and Contra-Remonstrants. In 1618 the Synod of Dort tackled this issue, which led to the banning of the Remonstrant faith.
What is the answer to this question: What was the main subject of controversy that arose within the Reformed Church during the beginning of the Republic?
****
So... predestination


The problem: Answer a question about this article:
The most extreme case was the Soviet Union, and this model may still be followed in some countries: it was a separate service, on a par with the navy or ground force. In the Soviet Union this was called Voyska PVO, and had both fighter aircraft and ground-based systems. This was divided into two arms, PVO Strany, the Strategic Air defence Service responsible for Air Defence of the Homeland, created in 1941 and becoming an independent service in 1954, and PVO SV, Air Defence of the Ground Forces. Subsequently these became part of the air force and ground forces respectively
Which country had the most severe case?
****
The answer: Soviet Union


The problem: Answer a question about this article:
Independence was unilaterally declared on 24 September 1973. Recognition became universal following the 25 April 1974 socialist-inspired military coup in Portugal, which overthrew Lisbon's Estado Novo regime.
What event caused the recognition to be universal?
****
The answer:
socialist-inspired military coup