This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

The major U.S. broadcast television networks have affiliates in the Oklahoma City market (ranked 41st for television by Nielsen and 48th for radio by Arbitron, covering a 34-county area serving the central, northern-central and west-central sections Oklahoma); including NBC affiliate KFOR-TV (channel 4), ABC affiliate KOCO-TV (channel 5), CBS affiliate KWTV-DT (channel 9, the flagship of locally based Griffin Communications), PBS station KETA-TV (channel 13, the flagship of the state-run OETA member network), Fox affiliate KOKH-TV (channel 25), CW affiliate KOCB (channel 34), independent station KAUT-TV (channel 43), MyNetworkTV affiliate KSBI-TV (channel 52), and Ion Television owned-and-operated station KOPX-TV (channel 62). The market is also home to several religious stations including TBN owned-and-operated station KTBO-TV (channel 14) and Norman-based Daystar owned-and-operated station KOCM (channel 46).
What rank is Oklahoma Cities television networks for Nielsen?

Since 2001, Miami has been undergoing a large building boom with more than 50 skyscrapers rising over 400 feet (122 m) built or currently under construction in the city. Miami's skyline is ranked third-most impressive in the U.S., behind New York City and Chicago, and 19th in the world according to the Almanac of Architecture and Design. The city currently has the eight tallest (as well as thirteen of the fourteen tallest) skyscrapers in the state of Florida, with the tallest being the 789-foot (240 m) Four Seasons Hotel & Tower.
How many 400+ foot skyscrapers have been built or are in the process of being built in Miami since 2001?

Until 18 December 2010, Eton College was an exempt charity under English law (Charities Act 1993, Schedule 2). Under the provisions of the Charities Act 2006, it is now an excepted charity, and fully registered with the Charities Commission, and is now one of the 100 largest charities in the UK. As a charity, it benefits from substantial tax breaks. It was calculated by the late David Jewell, former Master of Haileybury, that in 1992 such tax breaks saved the School about £1,945 per pupil per year, although he had no direct connection with the School. This subsidy has declined since the 2001 abolition by the Labour Government of state-funded scholarships (formerly known as "assisted places") to independent schools. However, no child attended Eton on this scheme, meaning that the actual level of state assistance to the School has always been lower. Eton's retiring Head Master, Tony Little, has claimed that the benefits that Eton provides to the local community free of charge (use of its facilities, etc.) have a higher value than the tax breaks it receives as a result of its charitable status. The fee for the academic year 2010–2011 was £29,862 (approximately US$48,600 or €35,100 as of March 2011), although the sum is considerably lower for those pupils on bursaries and scholarships.

Why is being a charity beneficial to Eton?