IN: On 9 November 1989, the Wall was opened, and the two parts of the city were once again physically--though at this point not legally--united. The Two Plus Four Treaty, signed by the two German states and the four wartime allies, paved the way for German reunification and an end to the Western Allies' occupation of West Berlin. On 3 October 1990--the day Germany was officially reunified--East and West Berlin formally reunited as the city of Berlin, which then joined the enlarged Federal Republic as a city-state along the lines of the existing West German city-states of Bremen and Hamburg. Walter Momper, the mayor of West Berlin, became the first mayor of the reunified city.
is there still an east and west berlin?

OPTIONS:
- no
- yes

OUT: no

IN: Green is used as a backdrop for TV and electronic cinematography more than any other colour because television weathermen tended to wear blue suits. When chroma keying first came into use in television production, the blue screen that was then the norm in the movie industry was used out of habit, until other practical considerations caused the television industry to move from blue to green screens. Broadcast quality color television cameras use separate red, green and blue image sensors, and early analog TV chroma keyers required RGB component video to work reliably. From a technological perspective it was equally possible to use the blue or green channel, but because blue clothing was an ongoing challenge, the green screen came into common use. Newscasters sometimes forget the chroma key dress code, and when the key is applied to clothing of the same color as the background, the person would seem to disappear into the key. Because green clothing is less common than blue, it soon became apparent that it was easier to use a green matte screen than it was to constantly police the clothing choices of on-air talent. Also, because the human eye is more sensitive to green wavelengths, which lie in the middle of the visible light spectrum, the green analog video channel typically carried more signal strength, giving a better signal to noise ratio compared to the other component video channels, so green screen keys could produce the cleanest key. In the digital television and cinema age, much of the tweaking that was required to make a good quality key has been automated. However, the one constant that remains is some level of color coordination to keep foreground subjects from being keyed out.
can you wear blue on a green screen?

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- no
- yes

OUT: yes

IN: The Justice League is a team of comic book superheroes in the DC Comics Universe. Over the years they have featured a large number of characters in a variety of combinations.
is captain america part of the justice league?

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- no
- yes

OUT: no

IN: Two parties soon developed, one in opposition, the Anti-Federalists, and one in support, the Federalists, of the Constitution; and the Constitution was debated, criticized, and expounded upon clause by clause. Hamilton, Madison, and Jay, under the name of Publius, wrote a series of commentaries, now known as The Federalist Papers, in support of ratification in the state of New York, at that time a hotbed of anti-Federalism. These commentaries on the Constitution, written during the struggle for ratification, have been frequently cited by the Supreme Court as an authoritative contemporary interpretation of the meaning of its provisions. The dispute over additional powers for the central government was close, and in some states ratification was effected only after a bitter struggle in the state convention itself.
were there political parties when the constitution was written?

OPTIONS:
- no
- yes

OUT:
no