Input: Article: In the past, the floor exercise event was executed on the bare floor or mats such as wrestling mats. Today, the floor event occurs on a carpeted 12m 12m square, usually consisting of hard foam over a layer of plywood, which is supported by springs or foam blocks generally called a "spring" floor. This provides a firm surface that provides extra bounce or spring when compressed, allowing gymnasts to achieve greater height and a softer landing after the composed skill. Gymnasts perform a choreographed routine up to 90 seconds in the floor exercise event; Depending on the level, they may choose their own, or, if known as a "compulsory gymnast," default music must be played. In some gymnastic associations such as United States Association of Gymnastic Clubs (USAIGC), gymnasts are allowed to have vocals in their music but at USA Gymnastics competitions a large deduction is taken from the score for having vocals in the music. The routine should consist of tumbling lines, series of jumps, leaps, dance elements, acrobatic skills, and turns, or piviots, on one foot. A gymnast can perform up to four tumbling lines that usually includes at least one flight element without hand support. Each level of gymnastics requires the athlete to perform a different number of tumbling passes. In level 7 in the United States, a gymnast is required to do 23, and in levels 810, at least 34 tumbling passes are required.

Now answer this question: What was the floor exercise even on before?

Output: the bare floor or mats such as wrestling mats

Article: In the 1890s, the recording formats of the earliest (toy) discs were mainly 12.5 cm (nominally five inches) in diameter; by the mid-1890s, the discs were usually 7 in (nominally 17.5 cm) in diameter. By 1910 the 10-inch (25.4 cm) record was by far the most popular standard, holding about three minutes of music or other entertainment on a side. From 1903 onwards, 12-inch records (30.5 cm) were also sold commercially, mostly of classical music or operatic selections, with four to five minutes of music per side. Victor, Brunswick and Columbia also issued 12-inch popular medleys, usually spotlighting a Broadway show score. However, other sizes did appear. Eight-inch discs with a 2-inch-diameter (51 mm) label became popular for about a decade in Britain, but they cannot be played in full on most modern record players because the tone arm cannot play far enough in toward the center without modification of the equipment.

Question: What was one requirement issue with discs popular in Britain?
Ans: modification of the equipment

Here is a question about this article: Over New York City in 1953, Eastern Airlines Flight 8610, a commercial flight, had a near miss with Air Force Flight 8610, a Lockheed C-121 Constellation known as Columbine II, while the latter was carrying President Eisenhower. This prompted the adoption of the unique call sign Air Force One, to be used whenever the president is on board any US Air Force aircraft. Columbine II is the only presidential aircraft to have ever been sold to the public and is the only remaining presidential aircraft left unrestored and not on public display.
What is the answer to this question: What call sign does an Air Force aircraft have when a president is traveling on it?
****
So... Air Force One

The problem: Answer a question about this article:
After centuries of Danish, Swedish and German rule the native Estonians started to yearn for independence during the period of national awakening while being governed by the Russian Empire. Established on 24 February 1918, the Republic of Estonia came into existence towards the end of World War I. During World War II, Estonia was then occupied by the Soviet Union in 1940, then Nazi Germany a year later and again in 1944 establishing the Estonian Soviet Socialist Republic. In 1988, during the Singing Revolution, the Estonian SSR issued the Estonian Sovereignty Declaration to defy against the illegal Soviet rule. Estonia then restored its independence during the 1991 coup by the Soviets on the night of 20 August 1991.
Who was in control of Estonia for most of the country's history?
****
The answer: Danish, Swedish and German rule

Problem: Please answer a question about the following article about Steven Spielberg:
In early 2009, Spielberg shot the first film in a planned trilogy of motion capture films based on The Adventures of Tintin, written by Belgian artist Herge, with Peter Jackson. The Adventures of Tintin: The Secret of the Unicorn, was not released until October 2011, due to the complexity of the computer animation involved. The world premiere took place on October 22, 2011 in Brussels, Belgium. The film was released in North American theaters on December 21, 2011, in Digital 3D and IMAX. It received generally positive reviews from critics, and grossed over $373 million worldwide. The Adventures of Tintin won the award for Best Animated Feature Film at the Golden Globe Awards that year. It is the first non-Pixar film to win the award since the category was first introduced. Jackson has been announced to direct the second film.
Where did Adventures of Tintin debut?
A: Brussels, Belgium

Question: Read this and answer the question

James Rassmann, a Green Beret advisor who was aboard Kerry's PCF-94, was knocked overboard when, according to witnesses and the documentation of the event, a mine or rocket exploded close to the boat. According to the documentation for the event, Kerry's arm was injured when he was thrown against a bulkhead during the explosion. PCF 94 returned to the scene and Kerry rescued Rassmann who was receiving sniper fire from the water. Kerry received the Bronze Star Medal with Combat "V" for "heroic achievement", for his actions during this incident; he also received his third Purple Heart.

What does the Combat V mean?
Answer:
heroic achievement