Problem: Given the following passage "Nevertheless, it was radar that proved to be critical weapon in the night battles over Britain from this point onward. Dowding had introduced the concept of airborne radar and encouraged its usage. Eventually it would become a success. On the night of 22/23 July 1940, Flying Officer Cyril Ashfield (pilot), Pilot Officer Geoffrey Morris (Observer) and Flight Sergeant Reginald Leyland (Air Intercept radar operator) of the Fighter Interception Unit became the first pilot and crew to intercept and destroy an enemy aircraft using onboard radar to guide them to a visual interception, when their AI night fighter brought down a Do 17 off Sussex. On 19 November 1940 the famous RAF night fighter ace John Cunningham shot down a Ju 88 bomber using airborne radar, just as Dowding had predicted.", answer the following question. Note that the answer is present within the text. Question: Who were the first ones to use radar in the sky the crew of?

A: Flying Officer Cyril Ashfield (pilot), Pilot Officer Geoffrey Morris (Observer) and Flight Sergeant Reginald Leyland (Air Intercept radar operator)

Problem: Given the following passage "The region is well known for its Golconda and Hyderabad painting styles which are branches of Deccani painting. Developed during the 16th century, the Golconda style is a native style blending foreign techniques and bears some similarity to the Vijayanagara paintings of neighbouring Mysore. A significant use of luminous gold and white colours is generally found in the Golconda style. The Hyderabad style originated in the 17th century under the Nizams. Highly influenced by Mughal painting, this style makes use of bright colours and mostly depicts regional landscape, culture, costumes and jewellery.", answer the following question. Note that the answer is present within the text. Question: What are make of the types of Deccani painting?

A: styles

Problem: Given the following passage "Antennas are characterized by a number of performance measures which a user would be concerned with in selecting or designing an antenna for a particular application. Chief among these relate to the directional characteristics (as depicted in the antenna's radiation pattern) and the resulting gain. Even in omnidirectional (or weakly directional) antennas, the gain can often be increased by concentrating more of its power in the horizontal directions, sacrificing power radiated toward the sky and ground. The antenna's power gain (or simply "gain") also takes into account the antenna's efficiency, and is often the primary figure of merit.", answer the following question. Note that the answer is present within the text. Question: What does the gain represent?

A: merit

Problem: Given the following passage "An exception is the United States, where patents filed prior to 8 June 1995 expire 17 years after the publication date of the patent, but application extensions make it possible for a patent to issue much later than normally expected (see submarine patents). The various MP3-related patents expire on dates ranging from 2007 to 2017 in the U.S. Patents filed for anything disclosed in ISO CD 11172 a year or more after its publication are questionable. If only the known MP3 patents filed by December 1992 are considered, then MP3 decoding has been patent-free in the US since 22 September 2015 when U.S. Patent 5,812,672 expired which had a PCT filing in October 1992. If the longest-running patent mentioned in the aforementioned references is taken as a measure, then the MP3 technology will be patent-free in the United States on 30 December 2017 when U.S. Patent 5,703,999, held by the Fraunhofer-Gesellschaft and administered by Technicolor, expires.", answer the following question. Note that the answer is present within the text. Question: What will happen toward the end of the 17th year of the 21th century?

A:
U.S. Patent 5,703,999, held by the Fraunhofer-Gesellschaft and administered by Technicolor, expires