[Q]: Extract the answer to the question from the following context. Question: What is required in a wireless communication? Context: Resonant antennas are expected to be used around a particular resonant frequency; an antenna must therefore be built or ordered to match the frequency range of the intended application. A particular antenna design will present a particular feedpoint impedance. While this may affect the choice of an antenna, an antenna's impedance can also be adapted to the desired impedance level of a system using a matching network while maintaining the other characteristics (except for a possible loss of efficiency).
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[A]: antenna


[Q]: Extract the answer to the question from the following context. Question: The enrollment ratio for which gender was closer to 53%? Context: Education is compulsory from the age of 7 to 13. The enrollment of boys is higher than that of girls. In 1998, the gross primary enrollment rate was 53.5%, with higher enrollment ratio for males (67.7%) compared to females (40%).
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[A]: females


[Q]: Extract the answer to the question from the following context. Question: What type of music is named after something that people use in street attacks? Context: Influential gospel/R&B-influenced Aly-us released "Time Passes On" in 1993 (Strictly Rhythm), then later, "Follow Me" which received radio airplay as well as being played in clubs. Another U.S. hit which received radio play was the single "Time for the Perculator" by Cajmere, which became the prototype of ghetto house subgenre. Cajmere started the Cajual and Relief labels (amongst others). By the early 1990s artists such as Cajmere himself (under that name as well as Green Velvet and as producer for Dajae), DJ Sneak, Glenn Underground and others did many recordings. The 1990s saw new Chicago house artists emerge such as DJ Funk, who operates a Chicago house record label called Dance Mania. Ghetto house and acid house were other house music styles that were also started in Chicago.
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[A]: acid


[Q]: Extract the answer to the question from the following context. Question: Where in the Underground were shelters built? Context: Public demand caused the government in October 1940 to build new deep shelters:189–190 within the Underground to hold 80,000 people but were not completed until the period of heaviest bombing had passed. By the end of 1940 significant improvements had been made in the Underground and in many other large shelters. Authorities provided stoves and bathrooms and canteen trains provided food. Tickets were issued for bunks in large shelters to reduce the amount of time spent queuing. Committees quickly formed within shelters as informal governments, and organisations such as the British Red Cross and the Salvation Army worked to improve conditions. Entertainment included concerts, films, plays and books from local libraries.
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[A]:
deep